A kind of machinery loading device of ball-on-disk film tester
Technical field
The utility model is related to technical field of measurement and test, especially a kind of machinery loading device of ball-on-disk film tester.
Background technology
Bullet stream frictional force in order to measure rolling bearing between rolling element and raceway, has many simulation test machines to simulate
Contact situation in bearing between raceway and rolling element, and measure the bullet stream frictional force between two contacts.At present, can complete
Friction testing has four-ball tester, ball-on-disk film tester, double-arc spline testing machine etc..Wherein, ball-on-disk film tester application is wider.
When friction testing is carried out using ball-on-disk film tester, it is desirable in certain load range build-in test, namely need
Apply different load between ball test specimen and disk test specimen.At present existing ball-on-disk film tester is that hydraulic loaded or machinery add
Carry.
The drawbacks of hydraulic loaded is to load not enough accurately, also needs other Hydraulic Station, relatively costly.Existing mechanical load
Mode, is to withstand on static pressure axle bottom using the thimble installed in lever one end, and the other end hangs with briquetting.When electromagnetic component is powered
Afterwards, the gravity sum of electromagnetic force and briquetting by electromagnetic attracting force briquetting, can be made to be equal to electro spindle B, bracket and static pressure vertical shaft
Total force.Place counterweight to realize loading on the weighted platform of the electro spindle pallet top of ball test specimen connection again.But it is this
The defect that structure is present:Can there is mechanical swing during loading, affect loading stability;Once power-off, it is impossible to unloading in time, Yi Zao
Into the surface breakdown of two contacts, or even fracture;Leverage and electromagnetic component, complex structure, in-convenience in use.
Utility model content
In order to overcome the shortcomings of background technology, the utility model discloses a kind of machinery loading device of ball-on-disk film tester, adopts
Use following technical scheme:
A kind of machinery loading device of ball-on-disk film tester, described device includes handle, spiral handspike, spring pedestal, rectangle
Spring, spring cup, load transducer, electro spindle sleeve, electro spindle I, disk test specimen, column, weighted platform, counterweight, studs,
Loading nut, disk test specimen, ball test specimen etc.;It is characterized in that:Place counterweight on weighted platform, and with loading nut check.Rotation
Handle, spiral handspike is moved up and down, and promotes steel ball, spring pedestal, Rectangular Spring, load transducer, electro spindle I and disk test specimen one
Rise and move up and down.Stop when the show value of load transducer output is equal to the weight of counterweight, now ball test specimen and disk test specimen it
Between normal direction contact load be the weight of counterweight on weighted platform, so as to the purpose for realizing loading.
The lower end that there is T-shaped boss, T-shaped boss the lower end of the electro spindle sleeve is stretched in the circular hole of base upper surface, T-shaped
The upper end of boss is provided with 6 through holes, and 6 screws are tightened in 6 corresponding screwed holes of base through 6 through holes, so that
Electro spindle sleeve is fixedly connected with base;T-shaped boss center is threaded hole.
The spiral handspike props up the lower surface of spring pedestal through after the screwed hole at electro spindle sleeve T-shaped boss center,
Bellmouth is provided with spiral handspike upper surface and the spring pedestal lower surface, a steel ball is housed, for bullet in bellmouth
Spring base and spiral handspike automatic centering;The lower end left and right sides of spiral handspike is provided with screwed hole.
The handle has two, and handle one end is the end of thread, and the end of thread of handle screws in the screwed hole of spiral handspike lower end
In.
Rectangular Spring is installed on the spring pedestal.
The Rectangular Spring upper surface is placed with spring cup.
The spring cup upper end contacts with load transducer.
The bottom of the load transducer is fixed on the bottom of electro spindle I.
The electro spindle I is placed in electro spindle sleeve, can freely be moved up and down along electro spindle sleeve lining;Electricity is main
The top of axle I is fixed with column, weighted platform, oil sump box and disk test specimen.
The bottom of the oil sump box is machined with a spacer shell for being slightly larger than electro spindle I axle journals, its right flank processing circular hole;Electricity
The axle journal of main shaft I is stretched in oil sump box through the spacer shell in oil sump cassette bottom portion, and inserting end passes through disk test specimen.
The disk test specimen is pressed on the upper end of electro spindle I by loading nut.
The column has 4, is cylinder, and there is boss the lower end of column, is fixed on electro spindle I's by four screws
Upper surface, the upper end of column is provided with screwed hole.
The weighted platform surrounding is provided with 4 through holes, and 4 screws pass through 4 through holes to be tightened in the spiral shell of four column upper ends
In pit;The center of weighted platform is provided with screwed hole.
The studs lower end screws in the screwed hole at weighted platform center, and loading nut is stretched in upper end.
The counterweight is cylindrical counterweight, and center is provided with through hole, and counterweight is enclosed within studs, and the loading nut is screwed in
Studs, and counterweight is pressed on weighted platform.
The ball test specimen is extend in oil sump box through oil sump box right flank circular hole;Ball test piece upper part face is not higher than disk test specimen
Bottom surfaces;Ball test specimen is arranged on electro spindle II, and electro spindle II is fixed in electro spindle II support systems, and electro spindle II supports system
System is fixed on base.
Using the beneficial effect of above-mentioned technical proposal:
(1)Added load is the weight of counterweight on weighted platform, and loading numerical value is accurate;
(2)Counterweight is pressed on weighted platform by loading nut, and loading is stable;
(3)After counterweight removes, just there is no normal direction contact load between ball disk, ball disk test specimen is hardly damaged, and can extend ball
The service life of disk test specimen;
(4)Simple structure, low cost.
Description of the drawings
Fig. 1 is the structural representation of the machinery loading device of ball-on-disk film tester;
In figure:1st, handle;2nd, spiral handspike;3rd, steel ball;4th, spring pedestal;5th, Rectangular Spring;6th, spring cup;7th, load is passed
Sensor;8th, electro spindle sleeve;9th, electro spindle I;10th, oil sump box;11st, disk test specimen;12nd, column;13rd, weighted platform;14th, counterweight;
15th, nut is loaded;16th, studs;17th, ball test specimen;18th, electro spindle II;19th, electro spindle II support systems;20th, base.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in more detail with specific embodiment, but not as to this reality
With new restriction.
As shown in figure 1, a kind of machinery loading device of ball-on-disk film tester of the utility model includes handle(1), spiral handspike
(2), spring pedestal(4), Rectangular Spring(5), spring cup (6), load transducer (7), electro spindle sleeve(8), electro spindle I(9)、
Disk test specimen(11), column (12), weighted platform (13), counterweight (14), studs (16), loading nut (15), disk test specimen
(11), ball test specimen (17) etc..It is characterized in that:Stretch the lower end that there is T-shaped boss, T-shaped boss the lower end of the electro spindle sleeve (8)
In entering the circular hole of base (20) upper surface, the upper end of T-shaped boss is provided with 6 through holes, and 6 screws are tightened in bottom through 6 through holes
On seat (20) in 6 corresponding screwed holes, so that electro spindle sleeve(8)With base(20)It is fixedly connected;T-shaped boss center
It is threaded hole.
The spiral handspike (2) props up spring pedestal (4) through after the screwed hole at electro spindle sleeve (8) T-shaped boss center
Lower surface, be provided with bellmouth on spiral handspike (2) upper surface and the spring pedestal (4) lower surface, be equipped with bellmouth
One steel ball (3), for spring pedestal (4) and spiral handspike (2) automatic centering;Open the lower end left and right sides of spiral handspike (2)
There is screwed hole.
The handle (1) has two, and handle (1) one end is the end of thread, handle(1)The end of thread screw in spiral handspike(2)
In the screwed hole of lower end.
The spring pedestal(4)On Rectangular Spring is installed(5).
The Rectangular Spring(5)Upper surface is placed with spring cup(6).
The spring cup(6)Upper end and load transducer(7)Contact.
The load transducer(7)Bottom be fixed on electro spindle I(9)Bottom.
The electro spindle I(9)It is placed on electro spindle sleeve(8)In, can be along electro spindle sleeve(8)Inwall is freely up and down
It is mobile;Electro spindle I(9)Top is fixed with column(12), weighted platform(13), oil sump box(10)With disk test specimen(11).
The oil sump box(10)Bottom be machined with one slightly larger than electro spindle I(9)The spacer shell of axle journal, its right flank processing
Circular hole;Electro spindle I(9)Axle journal pass through oil sump box(10)The spacer shell of bottom stretches into oil sump box(10)Interior, inserting end passes through disk
Test specimen(11).
The disk test specimen(11)By loading nut(15)It is pressed on electro spindle I(9)Upper end.
The column(12)There are 4, be distributed in electro spindle I(9)Upper surface surrounding, be cylinder, column(12)
Lower end have boss, be fixed on electro spindle I by four screws(9)Upper surface, column(12)Upper end be provided with screwed hole.
The weighted platform(13)Surrounding is provided with 4 through holes, and 4 screws are tightened in four columns through 4 through holes(12)
In the screwed hole of upper end;Weighted platform(13)Center be provided with screwed hole.
The studs(16)Lower end screws in weighted platform(13)Stretch into loading nut in the screwed hole at center, upper end
(15).
The counterweight(14)For cylindrical counterweight, center is provided with through hole, counterweight(14)It is enclosed within studs (16), it is described
Loading nut (15) screws in studs (16), and counterweight (14) is pressed on weighted platform (13).
The ball test specimen (17) is extend in oil sump box (10) through oil sump box (10) right flank circular hole;On ball test specimen (17)
Portion face is not higher than disk test specimen (11) bottom surfaces;On electro spindle II (18), electro spindle II (18) is fixed on ball test specimen (17)
On electro spindle II support systems (19), electro spindle II support systems (19) is fixed on base(20)On.
During loading, first rotary handle(1), make spiral handspike(2)Move up and down, so that steel ball(3), spring pedestal
(4), Rectangular Spring (5), load transducer (7), electro spindle I (9) and disk test specimen (11) are moved up and down together, are adjusted to disk test specimen
(11) stop when will contacting with ball test specimen (17).Counterweight (14) is placed on into weighted platform(13)On, and with loading nut
(15) lock.Rectangular Spring is adjusted by rotary handle (1)(5)Decrement, so as to corrective action is in electro spindle I(9)On
Active force, works as load transducer(7)The show value of output is equal to counterweight(14)Weight when stop, now ball test specimen(17)With disk
Test specimen(11)Between normal direction contact load be weighted platform(13)Upper counterweight(14)Weight, so as to realize load mesh
's.
The non-detailed portion of the utility model is prior art, therefore the utility model is not described in detail to it.