A kind of portable friction abrasion test device
Technical field
The present invention relates to a kind of experimental rig for measuring fretting wear, more particularly to a kind of portable friction wear test dress
Put.
Background technology
Fretting wear not still plant equipment inefficiency the reason for, be also the principal mode for causing equipment failure.Machinery
The factor such as the fretting wear of parts and part material, work condition environment (pressure, temperature and lubrication) is closely related in equipment.Therefore
The professional friction wear testing machine that actual condition can be simulated is that Tribological Test studies essential instrument.Friction-wear test
Machine is a kind of extreme pressure property for evaluating various lubricants, wear resistance and calculates the testing equipment of coefficient of friction, fretting wear
The advanced and multi-functional precision and reliability for being directly connected to experimental study of testing machine.
At present, the friction wear testing machine developed both at home and abroad is roughly divided into following a few classes:Four ball frictional testing machines, ball-
Disk friction wear testing machine, reciprocating friction abrasion tester and all kinds of extraordinary friction wear testing machines.In recent years, friction mill
Damaging the development of testing machine has very big progress, but current testing machine is present, and volume is big, weight is big, be not easy to outgoing carrying
The shortcomings of.
The content of the invention
The invention provides a kind of portable friction abrasion test device, it is intended to which solving existing testing machine, to there is volume big
And it is not easy to the problem of outgoing carrying.
In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
A kind of portable friction abrasion test device, including pedestal, motor, screw mandrel module, upper specimen holder, lower examination
Sample fixture, linear bearing component, force snesor, contiguous block, balancing weight, grating scale, grating ruler reading head and oil groove.Screw mandrel module
Including screw mandrel and nut seat, screw mandrel horizontally set, oil groove is fixed on nut seat, and lower specimen holder is fixed in oil groove, is driven
Motor be arranged on pedestal and drive screw rotation, screw mandrel module be arranged on pedestal on.Linear bearing component includes bearing block
And slide bar, slide bar is longitudinally disposed and is fixed on pedestal, and contiguous block is fixed on bearing block, and force snesor is arranged on contiguous block
Lower end, balancing weight is arranged on the upper end of contiguous block, and upper specimen holder is arranged on the lower end of force snesor.Grating ruler reading head is fixed
It is be arranged in parallel on pedestal and with grating scale, grating scale is fixed on contiguous block and longitudinally disposed.
Further, contiguous block is provided with installation axle, and balancing weight is counterweight, and the center of balancing weight is provided with through hole, balancing weight set
Connect on the mounting shaft.The frictional resistance between upper sample and lower sample can as needed be increased.
Further, pedestal is the L-type being made up of base plate and riser.Screw mandrel module also includes pedestal, and pedestal passes through connecting plate
It is fixed on base plate;The shell of motor is fixed on base plate.Grating ruler reading head is fixed on riser by installing plate, sliding
Bar is fixed on riser.
Further, motor rotating shaft is connected by ripple shaft coupling with the screw mandrel of screw mandrel module.
Further, the shell of motor is connected by flange with the pedestal of screw mandrel module.
Further, the rear side one side of riser is provided with handle.It is easy to grasp.
Further, upper specimen holder is connected with force snesor by removable mode.Specimen holder can be convenient for changing,
Changed accordingly according to different upper samples.
Further, motor is AC servo motor.
Further, force snesor is 2 D force sensor.Frictional force and normal force are measured respectively.
Contiguous block is moved upwards up to certain altitude, upper sample is arranged on upper specimen holder, lower sample is arranged on
On lower specimen holder, to the liquid medium that presets is added in oil groove, putting down contiguous block makes to be arranged on upper on upper specimen holder
Sample and the lower sample contacts on lower specimen holder.By the balancing weight socket of constant weight on the mounting shaft, startup is watched
Taking motor makes its rotating, so as to drive the sliding block of screw mandrel module transversely to move left and right, makes the center of sample and lower sample
Alignment.By the rotational frequency and its rotational angle of test requirements document setting motor, that is, play the reciprocal fortune in transversely left and right of sample
Dynamic frequency and amplitude.In process of the test, the loading force of force snesor Real-time Collection longitudinal direction, horizontal tangential force, i.e. frictional force;
Change in displacement of the grating displacement sensor Real-time Collection contiguous block in longitudinal direction.Obtain upper and lower by follow-up upper-computer processing software
The change of wearing depth in coefficient of friction and experiment between sample.
Compared with prior art it is an advantage of the invention that:
1st, in the present invention experimental rig small volume, lightweight it is easy to carry.2nd, the wearing depth of sample can in the present invention
Real-time Collection is carried out by grating scale and grating ruler reading head (i.e. grating displacement sensor).3rd, on being changed by balancing weight
Pressure between sample and lower sample, realizes stabilization loading.4th, simple structure of the present invention, low cost of manufacture.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not to be taken as to model
The restriction enclosed, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these
Accompanying drawing obtains other related accompanying drawings.
Fig. 1 is complete machine structure schematic diagram of the invention.
Fig. 2 is the internal structure schematic diagram after present invention removal shell.
Specific embodiment
In the description of the invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ",
Terms such as " fixations " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally;Can be with
It is to mechanically connect, or electrically connect;Can be directly connected to, or be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals or two interaction relationships of element.For those of ordinary skills, can be with root
Understand above-mentioned term concrete meaning in the present invention according to concrete condition.
It is the structural representation after present invention removal shell 1 refering to Fig. 1 and Fig. 2, Fig. 2.A kind of portable friction abrasion examination
Experiment device, including pedestal, motor 2, screw mandrel module 4, upper specimen holder 13, lower specimen holder, linear bearing component 17, power
Sensor 11, contiguous block 10, balancing weight 9, grating scale 16, grating ruler reading head 15 and oil groove 12.
Screw mandrel module 4 includes screw mandrel and nut seat, and screw mandrel horizontally set, oil groove 12 is fixed on nut seat, lower specimen holder
Tool be fixed in oil groove 12, motor 2 be arranged on pedestal and drive screw rotation, screw mandrel module 4 be arranged on pedestal on;
Motor 2 is AC servo motor.
Linear bearing component 17 includes bearing block and slide bar, and slide bar is longitudinally disposed and is fixed on pedestal, and contiguous block 10 is consolidated
It is scheduled on bearing block, force snesor 11 is arranged on the lower end of contiguous block 10, force snesor 11 is 2 D force sensor.Balancing weight 9
The upper end of contiguous block 10 is arranged on, upper specimen holder 13 is arranged on the lower end of force snesor 11.Contiguous block 10 is provided with installation axle
8, balancing weight 9 is counterweight, and the center of balancing weight 9 is provided with through hole, and balancing weight is socketed in installation axle 8.The balancing weight 9 of loading force
It is multiple, is adequacy test requirement, these balancing weights 9 is respectively adopted the material processing of different densities, while its appearance and size
That processes is different, to meet the size control of loading force during experiment.
Grating ruler reading head 15 is fixed on pedestal and is be arranged in parallel with grating scale 16, and grating scale 16 is fixed on contiguous block 10
It is upper and longitudinally disposed.
The pedestal is the L-type being made up of base plate 6 and riser 7.Screw mandrel module 4 also includes pedestal, and pedestal passes through connecting plate
20 are fixed on base plate 6;The shell of motor 2 is fixed on base plate 6.Grating ruler reading head 15 is fixed on by installing plate 14
On riser 7, slide bar is fixed on riser 7.The rotating shaft of motor 2 is connected by ripple shaft coupling with the screw mandrel of screw mandrel module 4.Drive
The shell of dynamic motor 2 is connected by flange 3 with the pedestal of screw mandrel module 4.The rear side one side of riser 7 is provided with handle.
Motor 2 is that the power of whole experimental rig provides unit, and motor is by electric machine control system control, motor
The running frequency of the controllable AC servo motor of control system, operation amplitude.
Riser 7 and base plate 6 in this experimental rig other parts installing space is provided, as it is a kind of preferably both into " L "
Type is fixed together." L " type draw-in groove is machined with the leading flank of riser 7, shell 1 is easily installed.Installed in the trailing flank of riser 7
Have to be easy to carry and move away from the handle of experimental rig.The bottom one side of base plate 6 is provided with four symmetrical support feets 5, for adjusting
The depth of parallelism of whole machine, its material is elastomeric material, to reduce collision when experimental rig is placed.
Upper specimen holder 13 is connected with force snesor 11 by removable mode.Different type can be installed on force snesor 11
Upper specimen holder 13, with adapt to different tests requirement, the oil groove 12 on the nut seat of screw mandrel module 4 is affixed to below, oil
Groove 12 is manufactured built with lower specimen holder, oil groove 12 using lucite, is easy to observe closed test state.
The course of work of this experimental rig is as follows:Electric machine control system control motor 2 makees rotating, by shaft coupling
Device, screw mandrel, nut seat are finally changed into lower sample and move back and forth, and upper sample is pressed on lower sample, and relative cycle is cut between the two
To slip, force snesor 11 collection loading force and frictional force, grating ruler reading head 15 and the collection displacement of contiguous block 10 of grating scale 16
Change, the change for obtaining coefficient of friction and wearing depth is processed by host computer.
During working condition of the present invention, four support feets 5 are placed on the ground, and longitudinal direction is vertical direction, are laterally level
Left and right directions.
Specific embodiment of the invention is the foregoing is only, but technical characteristic of the invention is not limited thereto, Ren Heben
The technical staff in field in the field of the invention, all cover among the scope of the claims of the invention by the change or modification made.