CN105043769B - Multifunctional diamond bearing tester - Google Patents
Multifunctional diamond bearing tester Download PDFInfo
- Publication number
- CN105043769B CN105043769B CN201510563365.XA CN201510563365A CN105043769B CN 105043769 B CN105043769 B CN 105043769B CN 201510563365 A CN201510563365 A CN 201510563365A CN 105043769 B CN105043769 B CN 105043769B
- Authority
- CN
- China
- Prior art keywords
- bearing
- chuck
- pallet
- hemisphere jut
- spherical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Rolling Contact Bearings (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of Multifunctional diamond bearing tester, including support, testing stand, testing stand is rack-mount, testing stand includes bearing chuck and bearing mounting flange, bearing mounting flange is rotatably mounted to above bearing chuck, ball pivot levelling device is provided with below bearing chuck, ball pivot levelling device includes spherical pallet, hemisphere jut and restricted spring, together with spherical pallet cooperates with the sphere of hemisphere jut, multi-turn circular groove is milled with the nonreentrant surface of spherical tray upper surface and hemisphere jut, the shallower butter for accommodating lubrication of circular groove, restricted spring is arranged between spherical pallet and hemisphere jut, restricted spring is uniformly arranged between spherical pallet and hemisphere jut with annular.The Multifunctional diamond bearing tester can be tested diamond bearing overall frictional behaviour, polishing machine, staring torque, working life under mud flush state etc., meanwhile, high speed polishing can be carried out to diamond bearing, goes flash removed etc. to operate.
Description
Technical field
Field, more particularly to a kind of Multifunctional diamond bearing tester are tested the present invention relates to probing and drilling tool.
Background technology
In the prior art, diamond bearing is down-hole equipment, particularly one of critical component of mud motor, gold
Hard rock bearing is always worked in slurry environment, the performance such as its friction, abrasion, shock resistance, and working life is well dynamic
The major influence factors of drilling tool performance.The experimental assembly tested diamond bearing currently is there is no, is only in diamond
Before bearing mnanufacture, the toughness of the diamond chip (polycrystalline diamond or composite polycrystal-diamond) to manufacturing bearing,
Frictional behaviour is tested, and thus calculates the performance of bearing.In the actual manufacturing process of diamond bearing, due to experience high-temperature firing
Or welding process, the performance of diamond chip is generally reduced, and the performance of single diamond chip can not characterize multi-diamond piece group
Into bearing performance so that the current larger gap of Performance Evaluation generally existing to diamond bearing, seriously limit underground
Use, assessment and the popularization of instrument.
The content of the invention
For above-mentioned shortcoming and defect of the prior art, it is an object of the invention to provide a kind of Multifunctional diamond axle
Hold testing machine.
The purpose of the present invention is achieved through the following technical solutions：
A kind of Multifunctional diamond bearing tester, including support, testing stand, testing stand are rack-mount, testing stand
Including bearing chuck and bearing mounting flange, bearing mounting flange is rotatably mounted to above bearing chuck, under bearing chuck
Side is provided with ball pivot levelling device, and ball pivot levelling device includes spherical pallet, hemisphere jut and restricted spring, spherical pallet and ball
The raised sphere of shape is cooperated together, and multi-turn circular groove is milled with the nonreentrant surface of spherical tray upper surface and hemisphere jut,
The shallower butter for accommodating lubrication of circular groove, restricted spring is arranged between spherical pallet and hemisphere jut, and restricted spring is with ring
Shape is uniformly arranged between spherical pallet and hemisphere jut.
Preferably, in addition to fluid cylinder loading device, the fluid cylinder loading device includes big fluid cylinder and small liquid jar, the big liquid
Cylinder and small liquid jar include cylinder body and plunger rod, and the cylinder body of the small liquid jar is the plunger rod of big fluid cylinder, the post of the small liquid jar
Stopper rod is arranged in the plunger rod of the big fluid cylinder, and the big fluid cylinder and small liquid jar are plunger case, the plunger of the small liquid jar
Bar is connected to the lower section of spherical pallet.
Preferably, in addition to polishing block, the polishing block is also disposed on support.
Preferably, in addition to support shaft, the support shaft is arranged on support, and the support shaft is rectangular to be distributed in bearing
Chuck surrounding, the bearing chuck is slided in the support shaft, and the bearing mounting flange is arranged on by supporting plate suspension
In the coffin of support shaft formation.
Preferably, in addition to flange drive system, the flange disc driving system includes electric rotating machine, driving wheel, synchronization
Wheel, feed belt and decelerator, the electric rotating machine are arranged on the side of support shaft, the electric rotating by horizontally suspending framework
The output shaft of machine is set upward vertically, and output shaft connection driving wheel, the driving wheel connects synchronizing wheel, the synchronization by belt
Wheel is arranged on connection reducer, the decelerator output end below the top of the coffin of support shaft formation, the synchronizing wheel
Connect bearing mounting flange.
Preferably, the decelerator is arranged on above supporting plate, the supporting plate central aperture, and sets bearing in the air
Seat, described connecting shaft one end connection reducer, the other end is connected through the bearing block in supporting plate with bearing mounting flange.
Preferably, in addition to mud pit, have in the mud pit in two cavitys, a cavity and contain mud, it is another
Polishing fluid is contained in individual cavity.
Preferably, the polishing block includes polishing motor, rotates top disk, top fix bar and fixed mount, the polishing
Motor is rack-mount, and the top disk of rotation includes bearing pallet and top revolving body, and the top revolving body passes through axle
Support disk center is simultaneously fixedly connected with bearing pallet, and top fix bar, the top are respectively arranged with the two ends for rotating top disk
Sharp fix bar is provided with circular groove with rotating the end that top disk is contacted, and the top of the top disk of rotation is arranged in the circular groove,
The top disk of rotation is vertically-mounted, is arranged on positioned at the top fix bar rotated at the top of top disk on the upper plate of fixed mount, institute
State fixed mount to install on the bracket, the upper plate of the fixed mount is detachably arranged in above the pole of fixed mount, described
Polishing motor rotates top disk by belt drive and rotated.
Preferably, being provided with the bearing chuck edge prevents slurry liquid centrifugal force in bearing chuck rotation process from splashing
The enclosing penetrated.
Preferably, it is also equipped with torque sensor between the bearing mounting flange and connecting shaft；The fluid cylinder loading
Device connects pressure gauge.
Compared with prior art, the embodiment of the present invention at least has advantages below：
Multifunctional diamond bearing tester of the present invention can rub to overall under mud flush state of diamond bearing
Performance, polishing machine, staring torque, working life etc. is wiped to be tested, meanwhile, can to diamond bearing progress high speed polishing,
Flash removed etc. is gone to operate.Using the multifunctional test machine, the works such as diamond bearing technological development, performance test of dispatching from the factory are carried out
Make.
Brief description of the drawings
Fig. 1 is the structural representation of Multifunctional diamond bearing tester of the present invention；
Fig. 2 is Fig. 1 middle (center) bearings chuck and the partial enlarged drawing at ball pivot levelling device position；
Fig. 3 is the structural representation of the spherical pallet of the ball pivot levelling device of Multifunctional diamond bearing tester of the present invention
Figure；
Fig. 4 is the structural representation of the hemisphere jut of the ball pivot levelling device of Multifunctional diamond bearing tester of the present invention
Figure.
Embodiment
With reference to Fig. 1-Fig. 4 and embodiment, the invention will be further described, following examples be it is descriptive, no
It is limited, it is impossible to which protection scope of the present invention is limited with this.
A kind of Multifunctional diamond bearing tester, including support 1, testing stand, testing stand are arranged on support 1, experiment
Platform includes bearing chuck 2 and bearing mounting flange 3, and bearing mounting flange 3 is rotatably mounted to the top of bearing chuck 2, bearing
The lower section of chuck 2 is provided with ball pivot levelling device 5, and ball pivot levelling device 5 includes spherical pallet 4, hemisphere jut 6 and restricted spring 8,
Together with spherical pallet 4 cooperates with the sphere of hemisphere jut 6, in the spherical upper surface of pallet 4 and the nonreentrant surface of hemisphere jut 6
Multi-turn circular groove 7 is milled with, the shallower butter for accommodating lubrication of circular groove 7, restricted spring 8 is arranged on spherical pallet 4 and spherical male
Rise between 6, restricted spring 8 is uniformly arranged between spherical pallet 4 and hemisphere jut 6 with annular.Due to mismachining tolerance, experiment
When, bearing sound part can not be accomplished completely to putting down, and spring ball pivot levelling device 5 is the knot of the spring constraint of a ball hinged supporting+four
Structure, can reach purpose of the regulation to flat error.
Testing stand also includes fluid cylinder loading device 9, and the fluid cylinder loading device 9 includes big fluid cylinder and small liquid jar, described big
Fluid cylinder and small liquid jar include cylinder body and plunger rod, and the cylinder body of the small liquid jar is the plunger rod of big fluid cylinder, the small liquid jar
Plunger rod is arranged in the plunger rod of the big fluid cylinder, and the big fluid cylinder and small liquid jar are plunger case, the post of the small liquid jar
Stopper rod is connected to the lower section of spherical pallet 4.The accurate loading device of biliquid cylinder, plunger is delivered to by manual fluid cylinder hydrodynamic force
Go to produce loading force in cylinder, bearing loading uses twin-tub loaded in series, and the plunger rod of big fluid cylinder is the cylinder of small liquid jar, two fluid cylinders
It is plunger case.Big hydraulic cylinder loading, small cylinder precise fine-adjustment on-load pressure improves the accuracy of loading.
Testing stand also includes support shaft 10, and the support shaft 10 is arranged on support 1, the rectangular distribution of support shaft 10
In the surrounding of bearing chuck 2, the bearing chuck 2 is slided in the support shaft 10, and the bearing mounting flange 3 passes through supporting plate
15 suspensions are arranged in the coffin of the formation of support shaft 10.
Testing stand also includes flange drive system, and the flange disc driving system includes electric rotating machine 11, driving wheel 12, same
Step wheel 13, feed belt and decelerator 14, the electric rotating machine 11 are arranged on the side of support shaft 10 by horizontally suspending framework,
The output shaft of the electric rotating machine 11 is set upward vertically, and output shaft connection driving wheel 12, the driving wheel 12 is connected by belt
Synchronizing wheel 13 is connect, the synchronizing wheel 13 is arranged on the top of the coffin of the formation of support shaft 10, and the lower section of synchronizing wheel 13 connects
Connect decelerator 14, the output end of the decelerator 14 connection bearing mounting flange 3.Electric rotating machine 11 is horizontally suspended installed in support shaft
10 side, one can reduce the overall height of testing machine, and two can be with the overall center of gravity of Adjustment Tests machine, it is to avoid its by
In the excessively inclined run-off the straight of center of gravity or collapse.When the moment of torsion that bearing mounting flange 3 is fed back to is too big, due to dynamic by belt transport
Power, can avoid drive system from occurring destructive failure by way of belt slippage.
The decelerator 14 is arranged on the top of supporting plate 15, the central aperture of supporting plate 15, and sets bearing in the air
Seat, described connecting shaft one end connection reducer 14, the other end connects through the bearing block in supporting plate 15 with bearing mounting flange 3
Connect.
This Multifunctional diamond bearing tester also includes polishing block, and the polishing block is also disposed on support 1.It is described to throw
Light table includes polishing motor 16, rotates top disk, top fix bar 18 and fixed mount 19, and the polishing motor 16 is arranged on support
On 1, the top disk of rotation includes bearing pallet 20 and top revolving body 21, and the top revolving body 21 passes through bearing pallet 20
Center is simultaneously fixedly connected with bearing pallet 20, and top fix bar 18 is respectively arranged with the two ends for rotating top disk, described top
Fix bar 18 is provided with circular groove with rotating the end that top disk is contacted, and the top of the top disk of rotation is arranged in the circular groove,
The top disk of rotation is vertically-mounted, and the upper plate of fixed mount 19 is arranged on positioned at the top fix bar 18 rotated at the top of top disk
On, the fixed mount 19 is arranged on the support 1, and the upper plate of the fixed mount 19 is detachably arranged in the branch of fixed mount 19
Above bar, the polishing motor 16 rotates top disk by belt drive and rotated.
Being provided with the edge of bearing chuck 2 prevents what slurry liquid centrifugal force in the rotation process of bearing chuck 2 from sputtering
Enclosing 22.
Torque sensor 23 is also equipped between the bearing mounting flange 3 and connecting shaft；The fluid cylinder loading device 9
Connect pressure gauge.Supporting plate 15 is used to carry top decelerator 14, furthermore, the pressure passed over by bearing mounting flange 3 is complete
Portion is undertaken by supporting plate 15, is effectively protected torque sensor 23, in addition, torque sensor 23 directly with bearing mounting flange
3 connections, can measure the torque of bearing mounting flange 3 in real time, and if be installed to the outgoing position of electric rotating machine 11 or
Torque directly can not be really measured before decelerator 14, if on the output shaft of electric rotating machine 11, in moment of torsion mistake
When big, belt can skid and can not detect the change of moment of torsion, be installed to before decelerator 14, in addition it is also necessary to certain conversion relation
The moment of torsion of bearing mounting flange 3 can be just obtained, and the numerical value relatively reality of the moment of torsion also has certain difference.
Also include in mud pit 17, the mud pit 17 having in two cavitys, a cavity in the framework of support 1 containing
Fill and polishing fluid is contained in mud, another cavity.Bearing friction coefficient, moment of friction and working life are carried out in testing machine to survey
During examination, by the slurry liquid in mud pit 17 by slush pump pump to bearing chuck 2 at, mud pit is then flowed back to by pipeline again
17.And when polishing block carries out bearing polishing, it is also desirable to it will be used on polishing liquid pump to bearing pallet 20 for bearing polishing.
Diamond bearing multifunctional test machine：
Testing machine function is, hard alloy alignment bearing, PDC thrust bearings, ball bearing, hydrodynamic bearing, alignment bearing etc.
Coefficient of friction, moment of friction, working life of bearing etc. are tested, meanwhile, bearing can be processed by shot blasting.
Testing machine friction testing operation principle is that the quiet part of (1) diamond bearing is fixed by bearing chuck 2, bearing
Dynamic component fixed by bearing mounting flange 3；(2) after rotation main motor is by synchronizing wheel 13 and belt transmission, by slowing down
Band dynamic bearing dynamic component rotation after device 14 slows down；(3) the upward jack-up of fluid cylinder is loaded so that the dynamic and static part of bearing is in contact；
(4) on-load pressure is measured by the hydralic pressure gauge being connected on fluid cylinder, the measurement moment of friction of torque sensor 23, computer data is adopted
Collecting system acquisition time is measured, and can complete the friction testing of bearing.
Testing machine polishing principle is：Top disk two ends are rotated to be a rotating disk with hard alloy point, centre
Revolving body.Polished bearing is pressed on above the top disk of rotation with certain pressure.During polishing, the driving pulley of polishing motor 16
Rotation, causes the top disk of rotation to rotate at a high speed, rotates top disk and bearing carries out the purpose that high-speed friction reaches polishing.Rotation top
The rotating speed of sharp disk and the rotating speed of bearing mounting flange 3 pass through Digit Control Machine Tool control.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (10)
1. a kind of Multifunctional diamond bearing tester, it is characterised in that including support, testing stand, testing stand is arranged on support
On, testing stand includes bearing chuck and bearing mounting flange, and bearing mounting flange is rotatably mounted to above bearing chuck, axle
Hold and ball pivot levelling device is provided with below chuck, ball pivot levelling device includes spherical pallet, hemisphere jut and restricted spring, spherical
Pallet is milled with many together with being cooperated with the sphere of hemisphere jut in the nonreentrant surface of spherical tray upper surface and hemisphere jut
Circular groove is enclosed, the shallower butter for accommodating lubrication of circular groove, restricted spring is arranged between spherical pallet and hemisphere jut, constrain bullet
Spring is uniformly arranged between spherical pallet and hemisphere jut with annular.
2. Multifunctional diamond bearing tester according to claim 1, it is characterised in that also load and fill including fluid cylinder
Put, the fluid cylinder loading device includes big fluid cylinder and small liquid jar, the big fluid cylinder and small liquid jar include cylinder body and plunger rod, institute
The cylinder body for stating small liquid jar is the plunger rod of big fluid cylinder, and the plunger rod of the small liquid jar is arranged in the plunger rod of the big fluid cylinder,
The big fluid cylinder and small liquid jar are plunger case, and the plunger rod of the small liquid jar is connected to the lower section of spherical pallet.
3. Multifunctional diamond bearing tester according to claim 1 or 2, it is characterised in that also including polishing block, institute
Polishing block is stated to be also disposed on support.
4. Multifunctional diamond bearing tester according to claim 2, it is characterised in that described also including support shaft
Support shaft is arranged on support, and the support shaft is rectangular to be distributed in bearing chuck surrounding, and the bearing chuck is in the support
Slided on axle, the bearing mounting flange is hung by supporting plate and is arranged in the coffin of support shaft formation.
5. Multifunctional diamond bearing tester according to claim 4, it is characterised in that also including flange drivetrain
System, the flange drive system includes electric rotating machine, driving wheel, synchronizing wheel, feed belt and decelerator, and the electric rotating machine leads to
Cross and horizontally suspend the side that framework is arranged on support shaft, the output shaft of the electric rotating machine is set upward vertically, output shaft connection
Driving wheel, the driving wheel connects synchronizing wheel by belt, and the synchronizing wheel is arranged on the upper of the coffin of support shaft formation
Connection reducer below side, the synchronizing wheel, the decelerator output end connects bearing mounting flange.
6. Multifunctional diamond bearing tester according to claim 5, it is characterised in that the decelerator is arranged on branch
Above fagging, the supporting plate central aperture, and bearing block is set in hole, connecting shaft one end connection reducer, the other end is worn
The bearing block crossed in supporting plate is connected with bearing mounting flange.
7. Multifunctional diamond bearing tester according to claim 3, it is characterised in that described also including mud pit
Have to contain in two cavitys, a cavity in mud pit and polishing fluid is contained in mud, another cavity.
8. Multifunctional diamond bearing tester according to claim 3, it is characterised in that the polishing block includes polishing
Motor, the top disk of rotation, top fix bar and fixed mount, the polishing motor are rack-mount, the top Pan Bao of rotation
Bearing pallet and top revolving body are included, the top revolving body is fixedly connected through bearing tray center and with bearing pallet,
The two ends for rotating top disk are respectively arranged with top fix bar, and the top fix bar is provided with rotating the end that top disk is contacted
Circular groove, the top of the top disk of rotation is arranged in the circular groove, and the top disk of rotation is vertically-mounted, top positioned at rotating
Top fix bar at the top of disk is arranged on the upper plate of fixed mount, and the fixed mount is installed on the bracket, the fixed mount
Upper plate be detachably arranged in above the pole of fixed mount, the polishing motor rotates top disk by belt drive and rotated.
9. according to any described Multifunctional diamond bearing tester of claim 1-2,4-6, it is characterised in that in the axle
Hold chuck edge be provided with prevent slurry liquid in bearing chuck rotation process centrifugal force sputter enclosing.
10. Multifunctional diamond bearing tester according to claim 6, it is characterised in that in the bearing fixation
Torque sensor is also equipped between blue and connecting shaft；The fluid cylinder loading device connects pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510563365.XA CN105043769B (en) | 2015-09-07 | 2015-09-07 | Multifunctional diamond bearing tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510563365.XA CN105043769B (en) | 2015-09-07 | 2015-09-07 | Multifunctional diamond bearing tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105043769A CN105043769A (en) | 2015-11-11 |
| CN105043769B true CN105043769B (en) | 2017-08-25 |
Family
ID=54450487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510563365.XA Expired - Fee Related CN105043769B (en) | 2015-09-07 | 2015-09-07 | Multifunctional diamond bearing tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105043769B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946028B (en) * | 2019-03-01 | 2020-12-25 | 宁波韵升弹性元件有限公司 | Spring tension and compression test equipment based on lever self-adjustment |
| CN109779702B (en) * | 2019-03-29 | 2024-01-26 | 中国船舶重工集团公司第七0四研究所 | Turbine bearing seat structure with highly integrated oil circuit |
| CN110593752B (en) * | 2019-10-22 | 2024-03-22 | 中国地质大学（北京） | All-metal underground power drilling tool based on multistage double-plunger-eccentric gear mechanism |
| CN112985807A (en) * | 2021-04-22 | 2021-06-18 | 青岛理工大学 | Cambered surface roller ball holds in palm structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1164167A (en) * | 1997-08-21 | 1999-03-05 | Kobe Steel Ltd | Life evaluation device of bearing |
| CN102062685B (en) * | 2009-11-12 | 2012-06-20 | 上海大众汽车有限公司 | Fatigue test device of rubber bearing |
| CN101975659B (en) * | 2010-08-27 | 2012-06-13 | 洛阳轴研科技股份有限公司 | High-speed dynamic simulation test method for electric mainshaft bearing |
| CN102788732B (en) * | 2012-07-30 | 2015-01-07 | 中南钻石有限公司 | Impact resistance test device for diamond compound sheet |
| CN103884505B (en) * | 2014-03-23 | 2016-04-27 | 长春机械科学研究院有限公司 | Ball socket bearing multidimensional coordination loading condition simulation experiment system |
| CN204882074U (en) * | 2015-09-07 | 2015-12-16 | 中国地质大学（北京） | Multi -functional diamond bearing testing machine |
-
2015
- 2015-09-07 CN CN201510563365.XA patent/CN105043769B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105043769A (en) | 2015-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105043769B (en) | Multifunctional diamond bearing tester | |
| CN102156024B (en) | Hydraulic static balancing instrument for high-precision ship screw propeller | |
| CN102053015B (en) | Tester for thrust bearing | |
| CN202204476U (en) | Constant-inclination angle surface contact film lubrication measuring apparatus | |
| CN2842407Y (en) | Impaction and friction wear testing machine | |
| CN105823691B (en) | Simultaneous determination instrument and its application method in a kind of undrained shear strength room | |
| CN106290026B (en) | Rotary bending fatigue testing machine | |
| CN109238673B (en) | Performance testing device for operation power device and external force loading device thereof | |
| CN102183456B (en) | Digitally displayed automatic adhesive force instrument | |
| CN103487342B (en) | Laser Rockwell Hardness Standard Equipment and measuring method | |
| CN202544844U (en) | Tester for determining rock drillability and drilling parameter sensitivity | |
| CN101706410B (en) | Knife edge support friction test device | |
| CN105136364B (en) | A kind of stabilized platform sports ring eccentric moment measurement method | |
| CN201212847Y (en) | Static balancing detector for large non-shaft gravity force self-centering revolving body | |
| CN101339113A (en) | Machine tool main shaft axle journal shaft bushing friction performance test machine | |
| CN201138271Y (en) | Multifunctional static balancing tester | |
| CN101509819A (en) | Uniaxial air bearing table balance adjustment method | |
| CN108225806A (en) | A kind of drilling machine performance test apparatus | |
| CN107677418B (en) | Static balance test device and method for runner hub of large axial flow Kaplan turbine | |
| CN109211387A (en) | A kind of counterweight load control mechanism | |
| CN204882074U (en) | Multi -functional diamond bearing testing machine | |
| CN104634731B (en) | A kind of hydraulic loaded ball disc type bullet stream friction testing instrument | |
| CN116296928A (en) | Method for testing rolling contact fatigue performance of GCr15 bearing steel for manufacturing high-speed ceramic hybrid bearing | |
| CN107764676A (en) | One kind falls tower ring block frictional wear test device and method | |
| CN109490127A (en) | A kind of hydrodynamic lubrication annulus frictional wear experimental device and measurement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20190907 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |