CN109540722A - A kind of multifunction friction wear experimental rig - Google Patents
A kind of multifunction friction wear experimental rig Download PDFInfo
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- CN109540722A CN109540722A CN201910079881.3A CN201910079881A CN109540722A CN 109540722 A CN109540722 A CN 109540722A CN 201910079881 A CN201910079881 A CN 201910079881A CN 109540722 A CN109540722 A CN 109540722A
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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
- G01N3/56—Investigating resistance to wear or abrasion
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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
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Abstract
The invention discloses the subcomponents, crank disk, spindle motor of rubbing under a kind of multifunction friction wear experimental rig, including workbench, change charging assembly, upper friction pair component, reciprocating lower friction subcomponent, pin disc type；It is fixed with load bar in the middle part of workbench upper beam, load bar bottom is connected with idler wheel；The upper friction pair component pushed against with it is equipped with below idler wheel；Upper friction pair component is fixed in side uprights and is equipped with the upper fixture for fixed upper sample coupon；Friction subcomponent is removably attached on the workbench below upper friction pair component and is equipped with the lower fixture for fixed lower sample coupon under reciprocating lower friction subcomponent or pin disc type.The subcomponent that rubs under of the invention two can be driven by spindle motor and crank disk, improved part of appliance utilization rate, reduced equipment overall cost；Can be achieved a variety of different friction tests, and load can cyclically-varying, roller balancing device guarantees outer loading force radially downward, acts on sample coupon.
Description
Technical field
The invention belongs to frictional experiment engineering device technique fields, and in particular to a kind of multifunction friction wear experimental rig.
Background technique
Due to the needs of modern industry, engineering goods are to large size, high speed, top load and increasingly automated development, to equipment
Reliability, precision stability, extend the service life, be energy saving and reduce cost etc. and propose increasingly higher demands.This
A little requirements and fretting wear and lubrication have close relationship.Studies have shown that all machinery equipments all be rely on its part it
Between friction secondary relative motion and work, there is relative motion necessarily to have fretting wear.It rubs caused by improperly lubricating
Scouring damage, not only affects the Working Life of the mankind, more causes serious waste.In order to fretting wear phenomenon and its essence
It is studied, influence of the various factors to friction and wear behavior is correctly evaluated, so that it is determined that meeting the friction pair of requirement
The optimized parameter of element.Therefore frictional wear test device becomes as the essential equipment of tribology research.
According to friction is secondary and the difference of forms of motion, fretting wear can be divided into ball, pin disk and the ways of contact such as reciprocal
Fretting wear.Different friction wear testing machines is manufactured for these fretting wear forms on the market, such as MHK-500 ring block
Friction wear testing machine, WMJ-1500 reciprocating friction testing machine etc., but during actual test, we can encounter incessantly
A kind of friction pair, in order to meet the requirement of test, we would generally buy the friction-wear test of more different motion forms
Machine, which results in the wastes of experimental cost being significantly increased with device resource.Certainly, the more function of UMT series of U.S. CE TR company
Energy friction wear testing machine can carry out the secondary tribological test of diversified forms friction, however expensive.
In addition to this, on the market friction wear testing machine have very high integrated degree, so simulation operating condition
When the design of external applied load, nominal force loading method is often only simply used.But actual operating condition is complex, and not
The combination that same speed is carried from different external applied loads is as far apart as heaven and earth for the influence that friction-wear test generates.In addition existing
Frictional testing machine be also applied for the sample of a variety of different shapes and size, and be inconvenient to adjust the axis of sample up and down and in
The heart.So the current situation of comprehensive nowadays friction wear testing machine, develops a kind of simple, vdiverse in function, the stable essence of structure
Really, the friction wear testing machine of price material benefit is problem urgently to be resolved.
Summary of the invention
In order to overcome the deficiencies of the prior art, present invention seek to address that prior art problem, provides a kind of Multifunctional friction mill
Experimental rig is damaged, can be realized the secondary tribological test of the diversified forms friction such as pin disk, reciprocal, and load is variable.
The implementation of the object of the invention are as follows: a kind of multifunction friction wear experimental rig, including workbench, change load group
Rub subcomponent, crank disk, spindle motor under part, upper friction pair component, reciprocating lower friction subcomponent, pin disc type；Work
Platform is equipped with front column, rear column and side uprights, and a structure of an essay for front column and rear column has crossbeam；Change is installed to add on front column
One end of load component, rear column and crossbeam is hingedly fixed, and the other end of crossbeam is connected with charging assembly is become；It is solid in the middle part of crossbeam
Surely there is load bar, load bar bottom is connected with idler wheel；The upper friction pair component pushed against with it is equipped with below idler wheel；Upper friction pair group
Part is fixed in side uprights, and the upper fixture for fixed upper sample coupon is equipped in upper friction pair component；Reciprocating lower friction is secondary
Friction subcomponent is removably attached on the workbench below upper friction pair component under component or pin disc type, reciprocating lower friction
The lower fixture for fixed lower sample coupon is equipped under subcomponent and pin disc type in friction subcomponent；Reciprocating lower friction subcomponent
In the first lower fixture be arranged on horizontal sliding rail and slide unit；Reciprocating lower friction subcomponent passes through connecting rod connecting crank circle
Disk, spindle motor drive crank disk rotation, and it is horizontal that connecting rod drives slide unit and the first fixed lower sample coupon of lower fixture to realize
It moves back and forth；It sells the in the subcomponent that rubs under disc type second lower fixture to be arranged over pulleys carried, belt pulley connects bent by belt
Handle disk, spindle motor drive crank disk rotation, and belt drives belt pulley and the second fixed lower sample coupon of lower fixture real
Existing rotary motion.
Rub subcomponent, and two under reciprocating lower friction subcomponent or pin disc type that the present invention is detachably fixed by setting
A lower friction subcomponent can be driven by spindle motor and crank disk, improve part of appliance utilization rate, and it is whole to reduce equipment
Cost.Lower sample coupon is fixed on the lower fixture of lower friction subcomponent and does reciprocal or rotary motion, upper examination with spindle motor rotation
Exemplar is fixed on the upper mold of upper friction pair component and upper mold is stood, and makes sample coupon and upper sample coupon phase mutual friction, until
Two different friction tests can be achieved less.Become charging assembly can in friction process by crossbeam and load bar adjustment to above rubbing
The loading force of subcomponent is wiped, realizes and becomes load frictional experiment；Roller balancing device is set on upper friction pair component, it is ensured that outer
The power that load generates acts on sample coupon radially downward.
Preferably, the upper friction pair component include carrying platform, support platform, upper fixture, upper fixture matching piece and
Upper fixture holding screw；Support platform is fixedly connected with side uprights；Carrying platform is fixed in support platform；Upper fixture top
Equipped with multiple protrusions and it is mounted in the card slot of carrying platform lower part, upper fixture lower part is equipped with groove, it is equipped with foil gauge in groove,
Foil gauge and upper sample coupon are arranged between upper fixture and upper fixture matching piece and are fastened by holding screw.
Upper fixture is detachably connected by protrusion and the card slot of carrying platform in the upper friction pair component of this programme, facilitates peace
Assembly and disassembly, and upper fixture matches with upper fixture matching piece and also facilitates upper sample coupon installation and removal, is suitable for different shape
Upper sample coupon.Upper fixture, which is equipped with foil gauge, can facilitate the change in friction force obtained in friction process.
Preferably, the reciprocating lower friction subcomponent includes the first lower fixture, lower clamp body, sliding rail, slide unit；The cunning
Rail is detachably connected on workbench, slide unit setting on the slide rail and with sliding rail slidable connection；Lower fixture is set on slide unit
Body, lower clamp body upper side are equipped with the first lower fixture and matched annular knurl holding screw for lower sample to be fastened on down
On clamp body；Slide unit one end and connecting rod are hinged, the outside of the hinged crank disk of connecting rod.
The reciprocating lower friction subcomponent structure of this programme is simple, facilitates integral demounting and installation, also facilitates lower sample coupon
Installation and removal；Lower sample coupon is fastened on lower fixture by the folding angle of the adjustable lower fixture of rotation annular knurl holding screw
Body surface face；Spindle motor rotation driving crank disk rotation, and drive slide unit to move reciprocatingly on the slide rail by railing.
It is further preferred that the reciprocating lower friction subcomponent further includes and the lower matched fixture of sample coupon size shape
Lower auxiliary member is for lower sample coupon to be fixed under fixture in the groove of the upper surface of auxiliary member, and the lower clamp body top other side is also
Equipped with the small holding screw for auxiliary member under stationary fixture；Lower clamp body and lower fixture and clamp body auxiliary member are installed in
In plastic casing.
Auxiliary member under fixture is further set in this programme, lower sample coupon can be fixed under fixture in auxiliary member then benefit
Auxiliary member under fixture and lower sample coupon are integrally secured firmly to lower clamp body with small holding screw and the cooperation of annular knurl holding screw
On.Reciprocating lower friction subcomponent can be made to be applicable to according to the suitable clamp body auxiliary member of size selection of lower sample coupon
Various sizes of lower sample coupon, small holding screw and annular knurl holding screw cooperation fixed effect are more preferable.
It is further preferred that being additionally provided with thermocouple heating plate and temperature sensor on the lower clamp body.It can in this programme
Can be heated during reciprocating friction is tested using heating plate, the friction-wear test of different temperatures is carried out；Test
Temperature in the process can be obtained by temperature sensor measurement.
Preferably, the subcomponent that rubs under the pin disc type includes the second lower fixture, clamp body auxiliary member, belt pulley, belt
Take turns lower main body, lower sleeve；Clamp body auxiliary member is fixed on above belt pulley, and the second lower fixture is annular slab and passes through holding screw
It is fixed on clamp body auxiliary member；Main body is arranged on lower sleeve under belt pulley, and lower sleeve is detachably mounted on workbench
And lower sleeve is connect by deep groove ball bearing with shaft, shaft passes through main body under belt pulley and is fixedly connected with belt pulley.
The subcomponent structure that rubs under the pin disc type of this programme is simple, facilitates integral demounting and installation, also facilitates lower sample coupon
Installation and removal；Lower sample coupon can be mounted on clamp body auxiliary member by dig-inning screw and be fixed by the second lower fixture,
Suitable for various sizes of lower sample coupon.Spindle motor drives crank disk rotation, and belt drives belt pulley and lower sample coupon to do
Rotary motion, belt pulley are connect by shaft and deep groove ball bearing with lower sleeve, whole good fixing effect and long service life.
It is further preferred that thermocouple heating plate and temperature sensor are additionally provided under the belt pulley in main body.This programme
In can use heating plate can pin disk-type friction test during be heated, carry out the friction-wear test of different temperatures；
Temperature during test can be obtained by temperature sensor measurement.
Preferably, the change charging assembly includes variable load device, spring structure body, spring guide pillar, pressure sensor；The change
Carrying device includes variable load device motor, variable load device axis, variable load device shell and end cap, cam structure body and cam follower；Variable load device shell
Body both ends have been bolted end cap, and one end of variable load device axis passes through variable load device shell and variable load device axis passes through bearing with end cover
It is connect with variable load device shell, the other end of variable load device axis is connect with variable load device motor；It is connected with cam structure body on variable load device axis,
Cam structure body and the cam follower of lower section connect, and cam follower lower end passes through the upper end of variable load device shell and spring guide pillar
It is connected；And spring guide pillar lower end is equipped with the pressure sensor being fixed on crossbeam.
In this programme after variable load device electric motor starting, variable load device axis drives the rotation of cam structure body, and passes through cam driven
Part and spring guide pillar squeeze spring structure body, realize and do work to crossbeam, and the displacement difference of cam follower is to spring structure body
Extruding degree is different, and spring structure body generates the pressure of mechanical periodicity to crossbeam, and measures the pressure by pressure sensor, passes through
It is acted on upper sample coupon fixed on upper friction pair component after crossing trace amplification, realizes and become load friction test.
It is further preferred that the spring guide pillar is detachably connected on cam follower by bolt, and the cross
Beam is equipped with counterweight load hook.This preferred embodiment can both be realized by spring guide pillar and spring structure body becomes load；It can also
To disassemble spring guide pillar and spring structure body, counterweight is loaded by reserved hook and realizes fixed load；Both can also
In conjunction with variable load range is increased, more complicated load condition is simulated.
Preferably, the side uprights are removably attached in the fixing groove of workbench by bolt.To the side of scheme
Face column is removable to be unloaded down, can also be fixed behind shift position in fixing groove, and the fixation position by changing side uprights can be with
The coincidence of the axis (reciprocating) of sample up and down and center (pin disc type) is realized in the position of sample coupon in adjustment.
Preferably, the spindle motor connect the speed for regulating and controlling spindle motor with single-chip microcontroller；Thermocouple heating plate connects
Connect single-chip microcontroller for regulate and control test heating power；The temperature sensor, foil gauge, pressure sensor are and data collecting plate card
Connect the digital signal for collecting temperature, frictional force, load.This programme controls spindle motor by single-chip microcontroller, and analog is permanent
The different operating conditions such as fast (high, low speed), speed change (acceleration, deceleration), carry out the tribological test under friction speed, and easily operated.It is logical
The critical datas such as collection temperature, frictional force, load can be facilitated by crossing data collecting plate card.
Compared with prior art, the invention has the following advantages that
1. multifunction friction wear testing machine of the invention, the friction secondary suitable for the diversified forms friction such as pin disk, reciprocal
Learn test；
2. the present invention passes through the roller balancing device on upper friction pair component, it is ensured that the power that outer load generates, it is radial
Downwards, sample coupon is acted on；
3. upper friction pair component of the present invention and lower friction subcomponent are the structure of autonomous Design, facilitate integral installation and more
Disassembly is changed, the installation and removal of upper fixture and lower fixture are also facilitated, is suitable for the upper and lower sample coupon of a variety of different shapes and sizes.
4. relative position is adjustable between friction subcomponent of the invention, axis or the center of upper and lower sample are enabled to
It is overlapped, it is ensured that the precision and repeatability of testing machine.
5. the switching for becoming load and loading two kinds of load loading methods surely can be achieved in the present invention；It can the two combination increase change
Range is carried, more complicated load condition is simulated.
6. the present invention can control spindle motor by single-chip microcontroller, simulation constant speed (high, low speed), speed change (acceleration, deceleration) etc. are no
Same operating condition carries out the tribological test under friction speed, and facilitates easily operated.
7. the present invention is combined by data collecting plate card and control program, the pass such as frictional force, temperature, load can be measured
Key data.
8. apparatus of the present invention overall structure is simple, design is rationally, low in cost, vdiverse in function.
Detailed description of the invention
Fig. 1 is that the overall structure diagram of the multifunction friction wear testing machine of the embodiment of the present invention 1 (is pacified in figure and held
Friction subcomponent is reciprocating lower friction subcomponent)；
Fig. 2 is upper friction pair components cross-sectional view in the embodiment of the present invention 1；
Fig. 3 is the connection schematic diagram of the upper fixture body of upper friction pair component and upper fixture matching piece in the embodiment of the present invention 1；
Fig. 4 is the reciprocating secondary jig main body cross-sectional view of lower friction in the embodiment of the present invention 1；
Fig. 5 is reciprocating lower friction subcomponent overall structure diagram in the embodiment of the present invention 1；
Fig. 6 is the partial sectional view for becoming charging assembly in the embodiment of the present invention 1；
Fig. 7 is that the subcomponent cross-sectional view that rubs under disc type is sold in the embodiment of the present invention 1；
Fig. 8 is the external structure schematic diagram that the subcomponent that rubs under disc type is sold in the embodiment of the present invention 1.
In figure: 1, front column；2, workbench；3, side uprights；4, become charging assembly；5, crossbeam；6, load bar；7, it rolls
Wheel；8, rear column；9, upper friction pair component；10, reciprocating lower friction subcomponent；11, connecting rod；12, crank disk；13, main shaft
Motor；14, the subcomponent that rubs under disc type is sold；
4-1, variable load device；4-2, left end cap；4-3, bearing with end cover；4-4, cam structure body；4-5, cam follower；4-6,
Spring structure body；4-7, upper end cover；Key on 4-8, variable load device axis；4-9, variable load device axis；4-10, right end cap；4-11, spring are led
Column；4-12, pressure sensor；
9-1, carrying platform；9-2, upper fixture；9-3, foil gauge；9-4, upper fixture matching piece；9-5, holding screw；9-6,
Support platform；9-7, upper sample coupon；
10-1, the first lower fixture；10-2, annular knurl holding screw；Auxiliary member under 10-3, fixture；10-4, thermocouple heating
Plate；10-5, the first lower sample coupon；10-6, small holding screw；10-7, lower clamp body；10-8, fixed bottom plate；10-9, plastic housing
Body；10-10, slide unit；10-11, sliding rail；
14-1, the second lower sample coupon；14-2, the second lower fixture；14-3, clamp body auxiliary member；14-4, belt pulley；14-5,
Main body under belt pulley；14-6, shaft；14-7, holding screw；14-8, thermocouple heating plate；14-9, deep groove ball bearing；14-10,
Lower sleeve.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" left side " " right side " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Embodiment 1
A kind of multifunction friction wear experimental rig of the present embodiment, including workbench 2, change charging assembly 4, upper friction pair
Rub subcomponent 14, crank disk 12, spindle motor 13 under component 9, reciprocating lower friction subcomponent 10, pin disc type；Workbench 2
Upper front side, rear side and left side are respectively equipped with front column 1, rear column 8 and side uprights 3, and a structure of an essay for front column 1 and rear column 8 has
Crossbeam 5；It is equipped on front column 1 and becomes charging assembly 4, rear column 8 and one end of crossbeam 5 are hingedly fixed by pin shaft, and crossbeam 5
The other end with become charging assembly 4 be connected；Load bar 6 is fixed in the middle part of crossbeam 5,6 bottom of load bar is connected with idler wheel 7；Rolling
7 lower section of wheel is equipped with the upper friction pair component 9 pushed against with it；Upper friction pair component 9 is fixed in side uprights 3, and side uprights 3 are logical
It crosses bolt to be removably attached in the fixing groove of workbench 2, the fixation position of adjustable side surface column on the table；On rub
Wipe the upper fixture being equipped in subcomponent 9 for fixed upper sample coupon；It rubs under reciprocating lower friction subcomponent 10 or pin disc type secondary
Component 14 is removably attached on the workbench 2 of 9 lower section of upper friction pair component, reciprocating lower friction subcomponent 10 and pin disc type
The lower fixture for fixed lower sample coupon is equipped in lower friction subcomponent 14.Spindle motor 13 is arranged in 2 right side platform of workbench
Below face, crank disk 12 is arranged on 2 right side table top of workbench, and spindle motor drives crank disk rotation, and drives reciprocal
Lower sample coupon does reciprocal or rotary motion in friction subcomponent 14 under subcomponent 10 or the pin disc type of rubbing under formula.Fig. 1 is this implementation
The multifunction friction wear testing machine of example installs the overall structure diagram of reciprocating lower friction subcomponent.
Specifically, as Figure 2-3, the upper friction pair component 9 includes carrying platform 9-1, support platform 9-6, upper folder
Have 9-2, upper fixture matching piece 9-4 and upper fixture holding screw 9-5；Support platform 9-6 is fixedly connected with side uprights 3；It holds
Carrying platform 9-1 is fixed on support platform 9-6；The top upper fixture 9-2 is equipped with multiple protrusions and is mounted on the lower part carrying platform 9-1
Card slot in, the lower part upper fixture 9-2 is equipped with groove, and foil gauge 9-3, foil gauge 9-3 and upper sample coupon 9-7 are equipped in groove and is all provided with
It sets between upper fixture 9-2 and upper fixture matching piece 9-4 and is fastened by holding screw.
As illustrated in figures 4-5, the reciprocating lower friction subcomponent 10 include the first lower fixture 10-1, lower clamp body 10-7,
Sliding rail 10-11, slide unit 10-10；The sliding rail 10-11 is detachably connected on workbench 2, and slide unit 10-10 is arranged in sliding rail
10-11 it is upper and with sliding rail slidable connection；Lower clamp body 10-7 is set on slide unit 10-10, is set at the upper side of lower clamp body 10-7
There is the first lower fixture 10-1 and matched annular knurl holding screw 10-2 to be used to the first lower sample coupon 10-5 being fastened on lower folder
Particularly.The first lower generally rectangular cross-section plate structure of sample coupon 10-5.Preferably, the reciprocating lower friction subcomponent 10 also wraps
It includes and is used to fix the first lower sample coupon 10-5 with auxiliary member 10-3 under the first lower matched fixture of sample coupon 10-5 size shape
Under fixture in the groove of the upper surface of auxiliary member 10-3, the other side is additionally provided under stationary fixture above lower clamp body 10-7
The small holding screw 10-6 of the M4 of auxiliary member；Lower clamp body and lower fixture and clamp body auxiliary member pass through the bottom lower clamp body 10-7
The fixation bottom plate 10-8 in portion is mounted in plastic casing 10-9.Thermocouple heating plate 10-4 is additionally provided on the lower clamp body 10-7
And temperature sensor.As shown in Figure 1, the one end slide unit 10-10 and connecting rod 11 are hinged, the outside of the hinged crank disk 12 of connecting rod 11；
Spindle motor 13 drives crank disk 12 to rotate, the first lower examination that connecting rod 11 drives the lower fixture of slide unit 10-10 and first fixed
Exemplar realizes horizontal reciprocating movement.
As Figure 7-8, the subcomponent that rubs under the pin disc type includes the second lower fixture 14-2, clamp body auxiliary member 14-
3, main body 14-5, lower sleeve 14-10 under belt pulley 14-4, belt pulley；Clamp body auxiliary member is fixed on above belt pulley, under second
Fixture 14-2 is annular slab and is fixed on clamp body auxiliary member 14-3 by M4 holding screw 14-7；Main body 14-5 under belt pulley
It is arranged on lower sleeve 14-10, lower sleeve 14-10 is detachably mounted on workbench 2 and lower sleeve 14-10 passes through deep-groove ball
Bearing 14-9 is connect with shaft 14-6, and shaft 14-6 passes through main body 14-5 under belt pulley and is fixedly connected with belt pulley 14-4.It is described
Thermocouple heating plate 14-8 and temperature sensor are additionally provided under belt pulley in main body 14-5.
Belt pulley 14-4 drives crank disk 12 to rotate by belt connecting crank disk 12, spindle motor 13, belt band
The the second lower fixture 14-2 of dynamic belt pulley 14-4 and second fixed lower sample coupon 14-1 realizes rotary motion.
The spindle motor 13 connect the speed for regulating and controlling spindle motor with single-chip microcontroller；Thermocouple heating plate connects monolithic
Machine is for regulating and controlling test heating power；The temperature sensor, foil gauge, pressure sensor connect use with data collecting plate card
In collection temperature, frictional force, the digital signal of load.
The change charging assembly 4 includes variable load device 4-1, spring structure body 4-6, spring guide pillar 4-11, pressure sensor 4-
12；The variable load device 4-1 includes variable load device motor, variable load device axis 4-9, variable load device shell and end cap, cam structure body 4-4 and convex
Take turns driven member 4-5；Variable load device shell left and right ends pass through bolt and are respectively fixed with left end cap 4-2 and right end cap 4-10, shell
It is fixedly arranged above upper end cover 4-7；One end of variable load device axis 4-9 passes through variable load device shell and variable load device axis 4-9 passes through bearing with end cover
4-3 is connect with variable load device shell, and bearing with end cover is deep groove ball bearing；The other end of variable load device axis 4-9 is connect with variable load device motor；
Pass through the key 4-8 connection cam structure body 4-4 on variable load device axis, cam knot on variable load device axis 4-9 in variable load device shell
The cam follower 4-5 connection of structure body 4-4 and lower section, the lower end cam follower 4-5 pass through variable load device shell and spring guide pillar 4-
11 upper end is connected；And the lower end spring guide pillar 4-11 is equipped with the pressure sensor 4-12 for being fixed on and embedding on crossbeam 5.Preferably,
The spring guide pillar 4-11 is detachably connected on cam follower 4-5 by bolt, and the crossbeam 5 adds equipped with counterweight
Carry hook.It can be achieved to become load by spring guide pillar and spring structure body cooperation；It can also be by spring guide pillar and spring structure body
It disassembles, counterweight is loaded by reserved hook and realizes fixed load；Can also both combine increase variable load range, simulation more
Complicated load condition.
Test one: reciprocating friction wear test
Upper sample coupon is cut to the testpieces that volume is not more than 40*10*60mm, upper sample coupon 9-7 is placed on upper folder
Have between matching piece 9-4 and upper fixture 9-2, screw holding screw 9-5, then upper fixture is aligned to the card slot of carrying platform 9-1,
By being rotatably mounted on upper fixture carrying platform 9-1.Need to check the position of foil gauge in installation process, and combine computer with
Data acquisition board tests foil gauge.Lower sample coupon should be no more than the testpieces of 160*80*120mm, lower sample coupon 10-5 installation
It on lower fixture, is matched by the lower fixture 10-1 of annular knurl fastening screw 10- and first, tightens holding screw, by the first lower examination
Exemplar 10-5 fastening.If it is desired, also also can size, shape according to sample, using auxiliary member 10-3 under matched fixture and
The small fastening screw 10-6 of M4 is matched, and integral installation is in plastic casing.Experimental rig is installed as shown in figure 1, by adjusting it is upper,
The position of lower sample coupon, and tested in the case where not applying load condition, it can be accurately by the axis tune of upper and lower sample coupon
To coincidence.
According to test requirements document, using the revolving speed of single-chip microcontroller control 13 live spindle of spindle motor, passed through after spindle motor starting
Shaft coupling is crossed, so that crank disk 12 rotates, the connecting rod on crank disk 12 is driven, so that slide unit 10-10 is on sliding rail 10-11
It moving back and forth, the first lower fixture 10-1 and lower clamp body 10-8 is fixed on slide unit 10-10, it is moved back and forth with slide unit 10-10, on
Fixture 9 is static, makes sample coupon 9-7 and the first lower sample coupon 10-5 phase mutual friction.
Frictional force can be obtained by being mounted on the foil gauge 9-3 of upper fixture 9-2, and the varying load that outside applies can also lead to
Pressure sensor 4-12 fixed on spring guide pillar lower beam 5 is crossed to measure.Temperature during friction-wear test can be by temperature
Sensor measurement obtains.
Test two: pin disk friction-wear test
Upper sample coupon is similar with reciprocating friction wear test sample requirement, and the second lower sample coupon needs to be cut to diameter about
30mm, thickness are not more than the disk of 10mm.Second lower fixture 14-2 is mounted on fixture auxiliary member 14-3, it can be according to the second examination
Sample size selects suitable installation method, and the second sample coupon can be as shown in figure 8, be fixed in the inner ring of the second lower fixture；?
It can be decided whether to stamp corresponding hole in sample coupon 14-1 according to the requirement of test, by the second lower sample coupon 14-1 according to auxiliary
Fixed pin holes on part 14-3 are punched on sample coupon 14-1 under second, and according to the fixed pin holes position on auxiliary member 14-3
Installation is fixed, and M4 holding screw 14-7, the lower sample coupon 14-1 of fastening second are tightened.Then the lower subcomponent that rubs of replacement, such as Fig. 1 institute
Show, side uprights 3, reciprocating lower friction subcomponent 10 and connecting rod 11 are removed, while the subcomponent 14 that rubs under mounting pin disc type,
Upper belt is replaced, side uprights are finally installed.It can be by upper and lower sample by side uprights and the adjustment of upper fixture position
The center of part is adjusted to be overlapped, and can be tested, remaining process is similar with reciprocating friction wear test.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of multifunction friction wear experimental rig, which is characterized in that including workbench, become charging assembly, upper friction pair group
Rub subcomponent, crank disk, spindle motor under part, reciprocating lower friction subcomponent, pin disc type；Workbench is equipped with preceding vertical
A structure of an essay for column, rear column and side uprights, front column and rear column has crossbeam；Change charging assembly is installed on front column, it is rear vertical
One end of column and crossbeam is hingedly fixed, and the other end of crossbeam is connected with charging assembly is become；It is fixed with load bar in the middle part of crossbeam,
Load bar bottom is connected with idler wheel；The upper friction pair component pushed against with it is equipped with below idler wheel；Upper friction pair component is fixed on side
The upper fixture for fixed upper sample coupon is equipped on the column of face, in upper friction pair component；Reciprocating lower friction subcomponent or pin disk
The subcomponent that rubs under formula is removably attached on the workbench below upper friction pair component, reciprocating lower friction subcomponent and pin
The lower fixture for fixed lower sample coupon is equipped under disc type in friction subcomponent；It is reciprocating it is lower friction subcomponent in first under
Fixture is arranged on horizontal sliding rail and slide unit；Reciprocating lower friction subcomponent passes through connecting rod connecting crank disk, spindle motor
Crank disk rotation is driven, connecting rod drives slide unit and the first fixed lower sample coupon of lower fixture to realize horizontal reciprocating movement；Pin
Over pulleys carried, belt pulley passes through belt connecting crank disk, main shaft to the second lower fixture setting under disc type in friction subcomponent
The rotation of motor driven crank disk, belt drive belt pulley and the second fixed lower sample coupon of lower fixture to realize rotary motion.
2. a kind of multifunction friction wear experimental rig according to claim 1, which is characterized in that the upper friction pair group
Part includes carrying platform, support platform, upper fixture, upper fixture matching piece and upper fixture holding screw；Support platform and side
Column is fixedly connected；Carrying platform is fixed in support platform；Upper fixture top is equipped with multiple protrusions and is mounted on carrying platform
In the card slot of lower part, upper fixture lower part is equipped with groove, is equipped with foil gauge in groove, foil gauge and upper sample coupon are arranged at folder
It is fastened between tool and upper fixture matching piece and by holding screw.
3. a kind of multifunction friction wear experimental rig according to claim 1, which is characterized in that it is described it is reciprocating under rub
Wiping subcomponent includes the first lower fixture, lower clamp body, sliding rail, slide unit；The sliding rail is detachably connected on workbench, slide unit
Setting on the slide rail and with sliding rail slidable connection；Lower clamp body is set on slide unit, is equipped under first at the upper side of lower clamp body
Fixture and matched annular knurl holding screw are used to lower sample being fastened on lower clamp body；Slide unit one end and connecting rod are hinged,
The outside of the hinged crank disk of connecting rod.
4. a kind of multifunction friction wear experimental rig according to claim 3, which is characterized in that it is described it is reciprocating under rub
Wiping subcomponent further includes being used to for lower sample coupon being fixed under fixture with auxiliary member under the lower matched fixture of sample coupon size shape
In the groove of the upper surface of auxiliary member, the other side is additionally provided with the small clamp screw for auxiliary member under stationary fixture above lower clamp body
Nail；Lower clamp body and lower fixture and clamp body auxiliary member are installed in plastic casing.
5. a kind of multifunction friction wear experimental rig according to claim 3, which is characterized in that on the lower clamp body
It is additionally provided with thermocouple heating plate and temperature sensor.
6. a kind of multifunction friction wear experimental rig according to claim 1, which is characterized in that rub under the pin disc type
Wiping subcomponent includes main body, lower sleeve under the second lower fixture, clamp body auxiliary member, belt pulley, belt pulley；Clamp body auxiliary member is solid
It is scheduled on above belt pulley, the second lower fixture is annular slab and is fixed on clamp body auxiliary member by holding screw；Under belt pulley
Main body is arranged on lower sleeve, and lower sleeve is detachably mounted on workbench and lower sleeve is connected by deep groove ball bearing and shaft
It connects, shaft passes through main body under belt pulley and is fixedly connected with belt pulley.
7. a kind of multifunction friction wear experimental rig according to claim 6, which is characterized in that main under the belt pulley
Thermocouple heating plate is additionally provided in body.
8. a kind of multifunction friction wear experimental rig according to claim 1, which is characterized in that the change charging assembly
Including variable load device, spring structure body, spring guide pillar, pressure sensor；The variable load device include variable load device motor, variable load device axis,
Variable load device shell and end cap, cam structure body and cam follower；Variable load device shell both ends have been bolted end cap, become
The one end for carrying device axis passes through variable load device shell and variable load device axis and is connect by bearing with end cover with variable load device shell, variable load device axis it is another
One end is connect with variable load device motor；Cam structure body, the cam follower of cam structure body and lower section are connected on variable load device axis
Connection, cam follower lower end pass through variable load device shell and are connected with the upper end of spring guide pillar；Spring guide pillar is equipped with spring body knot
Structure, and spring guide pillar lower end is equipped with the pressure sensor being fixed on crossbeam.
9. a kind of multifunction friction wear experimental rig according to claim 8, which is characterized in that the spring guide pillar is logical
It crosses bolt to be detachably connected on cam follower, and the crossbeam is equipped with counterweight load hook.
10. according to claim 1 to a kind of 8 described in any item multifunction friction wear experimental rigs, which is characterized in that described
Side uprights are removably attached in the fixing groove of workbench by bolt.
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| CN111706677A (en) * | 2020-06-05 | 2020-09-25 | 浙江工业大学 | Lower friction pair and transmission device |
| CN112345394A (en) * | 2020-08-26 | 2021-02-09 | 江苏大学 | Friction wear test device capable of realizing differential temperature distribution of pin discs and realizing self-adaptive adjustment |
| CN112485148A (en) * | 2020-11-30 | 2021-03-12 | 合肥工业大学 | Three-point type sliding-rolling contact fatigue wear testing machine |
| CN112730093A (en) * | 2020-12-24 | 2021-04-30 | 北京航星机器制造有限公司 | High-temperature tension or compression test device and method based on speckle strain |
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| CN111380749A (en) * | 2020-04-10 | 2020-07-07 | 兰州华汇仪器科技有限公司 | Anti-deformation sintering clamp for detection piece, assembly and disassembly kit and assembly and disassembly method thereof |
| CN111413238A (en) * | 2020-04-20 | 2020-07-14 | 江苏科技大学 | Friction-wear test device under current-carrying condition |
| CN111706677A (en) * | 2020-06-05 | 2020-09-25 | 浙江工业大学 | Lower friction pair and transmission device |
| CN112345394B (en) * | 2020-08-26 | 2023-02-17 | 江苏大学 | Friction wear test device capable of realizing differential temperature distribution of pin discs and realizing self-adaptive adjustment |
| CN112345394A (en) * | 2020-08-26 | 2021-02-09 | 江苏大学 | Friction wear test device capable of realizing differential temperature distribution of pin discs and realizing self-adaptive adjustment |
| CN112485148A (en) * | 2020-11-30 | 2021-03-12 | 合肥工业大学 | Three-point type sliding-rolling contact fatigue wear testing machine |
| CN112485148B (en) * | 2020-11-30 | 2024-06-04 | 合肥工业大学 | Three-point type sliding contact fatigue wear testing machine |
| CN112730093A (en) * | 2020-12-24 | 2021-04-30 | 北京航星机器制造有限公司 | High-temperature tension or compression test device and method based on speckle strain |
| CN113155661A (en) * | 2021-05-08 | 2021-07-23 | 河南科技大学 | Reciprocating type friction and wear test and use fixture device and reciprocating type friction and wear test machine |
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| CN113267417A (en) * | 2021-06-03 | 2021-08-17 | 上海应用技术大学 | Coating friction wear detection testing machine |
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