CN104535321B - flexible bearing fatigue life test device - Google Patents
flexible bearing fatigue life test device Download PDFInfo
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- CN104535321B CN104535321B CN201410803710.8A CN201410803710A CN104535321B CN 104535321 B CN104535321 B CN 104535321B CN 201410803710 A CN201410803710 A CN 201410803710A CN 104535321 B CN104535321 B CN 104535321B
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- flexible bearing
- drive
- sliding block
- tensioning wheel
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Abstract
The present invention provides the test device of flexible bearing outer ring fatigue life a kind of, including driver (43), drive (8) (9), transmission belt (12) (47), cam (1), flexible bearing (2a), tensioning wheel (4) (5) (6) (7), flaw detection sensor (13), tachometer generator (14), computer (17), rack (42), load adjusting device (24) (25), tensioning wheel regulating device (18) (19) (20) (21), the device can be in the case where simulating flexible bearing working condition, test the fatigue life of flexible bearing.
Description
Technical field
The invention belongs to a kind of tests of the fatigue life of bearing fatigue detection technique field more particularly to flexible bearing to fill
It puts, for testing deformed flexible bearing in unloaded or different loads fatigue life.
Background technology
Harmonic drive is a kind of driving form occurred in generation nineteen fifty, is transmitted using the controllable flexible deformation of elastic original paper
The principle of movement and power is innovated, and differentiates it from other driving forms.Harmonic wave drive speed reducer is mainly by wave producer, soft
The compositions such as wheel, firm gear.Cam wave generator equipped with flexible bearing is the wave producer structure that harmonic drive mainly uses.
Due to many particular advantages of harmonic drive, in recent decades, harmonic drive is widely used robot, number
Control the fields such as lathe, food packing machine, printing machinery, textile machine, ship, aeronautical and space technology, weapon.In harmonic drive
In, fatigue life of flexible bearing is one of an important factor for influencing the harmonic drive service life.
Flexible bearing is different from plain bearing, its Internal and external cycle wall thickness is thin, easily generates flexible deformation, is being not loaded into cam
Internal and external cycle is circular before.As shown in Figure 1, after loading onto cam 1, flexible bearing inner ring 2, flexible bearing outer ring 3 are deformed into
The equidistant curve of 1 profile of cam.
Existing bearing fatigue testing machine is all using plain bearing as subjects, and the Internal and external cycle of this class bearing is in work shape
State is held round, using plain bearing between the main test bearing rolling element of the bearing fatigue testing machine of subjects and raceway
Contact fatigue strength.
The working condition of flexible bearing is equipped with cam, and Internal and external cycle is cam profile equidistant curve, at present, in
The flexible bearing of working condition, still without good fatigue life test method.
By the fatigue life of flexible bearing under test job state, harmonic drive life forecast can be improved
Accuracy, be of great significance to the popularization and application and socio-economic development of Technology of Harmonic Wave Transmission.
The present invention proposes a kind of experimental rig for testing flexible bearing outer ring fatigue strength, which can be flexible in simulation
Under conditions of bearing working state, the fatigue life of flexible bearing is tested.
Invention content
The object of the present invention is to provide the test device of flexible bearing outer ring fatigue life a kind of, which can simulate soft
Property bearing working condition, pass through and loading assembled to the flexible bearing for pre-installing cam, realize under unloaded or loading environment, test institute
State the fatigue life of flexible bearing.
The present invention uses following technical scheme：
Cam is packed into flexible bearing, the cam-type wave generator assembling of harmonic drive is formed, at this time in flexible bearing
Circle and flexible bearing outer ring are all in deformation state.Cam is fixed in rack, and transmission belt is surrounded into deformation around drive
Flexible bearing outer ring afterwards, driver are rotated by being driven wheel drive transmission belt, and then drive flexible bearing outer ring rotating, because
Flexible bearing outer ring is in deformation state, and when flexible bearing outer ring rotating, every bit leads to all in alternate stress state thereon
It crosses flaw detection sensor and the outer ring fracture of tachometer generator detection flexible bearing and starts to test to turnning circle when being broken,
It can determine the fatigue life of flexible bearing.Packet of the transmission belt to flexible bearing outer ring can be adjusted with tensioning wheel regulating device
Angle can adjust active force of the transmission belt to flexible bearing outer ring with load adjusting device, change transmission belt to flexible after deformation
The active force of bearing.What is the flexible bearing outer ring for being in imposed deformation applied due to transmission belt is distributed load, this hair
The technical solution of bright proposition can simulate the actual working state of flexible bearing, and the used load on changeable flexible bearing.
The sensor for having flaw detection and revolution detection function concurrently can be used in the flaw detection sensor and the tachometer generator.
Invention advantageous effect：
Flexible bearing fatigue life test device of the present invention can be surveyed under conditions of flexible bearing working condition is simulated
The fatigue life of flexible bearing is tried, to improving flexible bearing design, improves flexible bearing fatigue life, Accurate Prediction harmonic drive
Service using life is of great significance.
Description of the drawings
Fig. 1 is cam-type wave generator assembling.In figure, 1- cams, 2a- flexible bearings, 2-- flexible bearing inner rings, 3- is soft
Property bearing outer ring.
Fig. 2 is test device.In figure, 4,5,6,7-- tensioning wheels, 8,9-- drives, 10,11 transmission shafts, 12-- transmissions
Band, 13-- flaw detection sensors, 14-- tachometer generators, 15,16 stents, 17-- computers, 18,19,20,21- tensioning wheels adjust
Device, 22-- flaw detection sensor cables, 23-- tachometer generator cables, 24,25- load adjusting devices, 26,27,28,29 slide
Block, 30,31,32,33-- screw pairs, 34,35,36,37- connecting shafts, 38,39- screw pairs, 40,41-- sliding blocks, 42-- racks.
Fig. 3 is Fig. 2 test device A-A sectional views.In Fig. 3,43- drivers, 44- stents, 45,46- belt wheels, 47- transmissions
Band, 48,49,50,51,52- connectors, 50a- output shafts, 53- connectors.
Specific embodiment
As shown in Figure 2,3, this test device is mainly by computer 17, flaw detection sensor 13, tachometer generator 14, driver
43rd, drive 8, drive 9, transmission belt 12, cam 1, flexible bearing 2a, tensioning wheel 4, tensioning wheel 5, tensioning wheel 6, tensioning wheel 7,
The compositions such as load adjusting device 24, load adjusting device 25, rack 42.Wherein cam 1 is fixed in rack 42, flexible bearing 2a
It deforms after being inserted in cam 1, flexible bearing inner ring 2 is deformed into 1 profile equidistant curve of cam with flexible bearing outer ring 3.Tensioning
Position of the regulating device 18 by 30 adjusting slider 26 of screw pair is taken turns, tensioning wheel 4 is connect by connecting shaft 34 with sliding block 26.Tensioning
Position of the regulating device 19 by 31 adjusting slider 27 of screw pair is taken turns, tensioning wheel 5 is connect by connecting shaft 35 with sliding block 27.Tensioning
Position of the regulating device 20 by 32 adjusting slider 28 of screw pair is taken turns, tensioning wheel 6 is connect by connecting shaft 36 with sliding block 28.Tensioning
Position of the regulating device 21 by 33 adjusting slider 29 of screw pair is taken turns, tensioning wheel 7 is connect by connecting shaft 37 with sliding block 29.Transmission
Wheel 8 is connect by connector 48 with transmission shaft 11 and on sliding block 40, drive 9 is connected by connector 52 and transmission shaft 10
It connects and is mounted on sliding block 41, load adjusting device 24, load adjusting device 25 are adjusted respectively by screw pair 39 and screw pair 38
The position of whole sliding block 41, sliding block 40, and then adjust the distance between drive 9 and drive 8.Transmission belt 12 around drive 8,
Drive 9, tensioning wheel 4, tensioning wheel 5, tensioning wheel 6, tensioning wheel 7, flexible bearing outer ring 3.By load adjusting device 24 and carry
Lotus adjusting apparatus 25 changes the distance between drive 9 and drive 8, can adjust the pulling force in transmission belt 12, and and then change
Become transmission belt 12 to the active force after deformation on flexible bearing outer ring 3, realize the loading to flexible bearing outer ring 3.Belt wheel 45 is logical
It crosses connector 49 to connect with transmission shaft 11, belt wheel 46 is connect by connector 51 with transmission shaft 10, the output shaft 50a of driver 43
It is connect by connector 50 with transmission shaft 11, driver 43 is fixed on by connector 53 on sliding block 40 by stent 44, transmission belt
47 are wound on belt wheel 45 and belt wheel 46, driver 43 by transmission belt 47 drive drive 8 rotated with drive 9, drive 8 and
Drive 9 drives flexible bearing outer ring 3 to rotate by transmission belt 12, since flexible bearing 2a is in by 1 imposed deformation shape of cam
State, and flexible bearing outer ring 3 is transmitted band 12 simultaneously in rotation and loads, therefore the test device can be simulated in harmonic drive
The working condition of flexible bearing.
Flaw detection sensor 13 is fixed on by stent 15 in rack 42, and 3 fracture information of monitoring flexible bearing outer ring, revolution passes
Sensor 14 is fixed on by stent 16 in rack 42,3 revolution information of monitoring flexible bearing outer ring.Flaw detection sensor cable 22 turns
Number sensor cable 23 is transferred to computer respectively by 3 fracture information of flexible bearing outer ring, 3 revolution information of flexible bearing outer ring
17, to monitor flexible bearing 2a working conditions.When flexible bearing outer ring 3 is broken, test device shuts down, outside flexible bearing
Enclose the fatigue life that 3 revolutions are flexible bearing 2a.
The driving forms such as ball-screw, connecting rod may be used in load adjusting device 24 and load adjusting device 25.
Flaw detection sensor 13 can have revolution detection function concurrently.Tachometer generator 14 can have monitoring flexible bearing outer ring concurrently
3 fracture functions.Computer 17 can be digital display device.
Cam 1 uses cam endoporus, and the flexible bearing outer ring 3 of flexible bearing 2a is inserted in the cam endoporus, then described
The flexible bearing outer ring 3 of flexible bearing 2a and flexible bearing inner ring 2 deform, and increase and the deformed flexible bearing
The transmission shaft that inner ring 2 contacts, the transmission shaft are driven by transmission belt 12, then the test device can be used for simulation actual condition
Test the fatigue life of flexible bearing inner ring 2.
Claims (1)
1. a kind of flexible bearing fatigue life test device, including cam (1), the 1st tensioning wheel (4), the 2nd tensioning wheel (5), the 3rd
Tensioning wheel (6), the 4th tensioning wheel (7), the 1st drive (8), the 2nd drive (9), flaw detection sensor (13), tachometer generator
(14), computer (17), rack (42), driver (43), the 1st transmission belt (12), the 2nd transmission belt (47), cam (1) are fixed on
In rack (42), cam (1) is packed into flexible bearing (2a), it is characterised in that：1st drive (8) passes through the 1st connector (48)
It is connect with the 1st transmission shaft (11) and on the 1st sliding block (40), the 2nd drive (9) is passed by the 2nd connector (52) and the 2nd
Moving axis (10) connects and on the 2nd sliding block (41), the 1st belt wheel (45) passes through the 3rd connector (49) and the 1st transmission shaft (11)
Connection, the 2nd belt wheel (46) are connect by the 4th connector (51) with the 2nd transmission shaft (10), the output shaft (50a) of driver (43)
It is connect by the 5th connector (50) with the 1st transmission shaft (11), driver (43) is by the 1st stent (44) by the 6th connector (53)
It is fixed on the 1st sliding block (40), the 2nd transmission belt (47) is wound on the 1st belt wheel (45) and the 2nd belt wheel (46), and driver (43) is logical
Crossing the 2nd transmission belt (47) drives the 1st drive (8) to be rotated with the 2nd drive (9), the 1st drive (8) and the 2nd drive (9)
Flexible bearing outer ring (3) is driven to rotate by the 1st transmission belt (12), the 1st load adjusting device (24), the 2nd load adjusting device
(25) position of the 2nd sliding block (41), the 1st sliding block (40) is adjusted by the 1st screw pair (39) and the 2nd screw pair (38) respectively, into
And the distance between the 2nd drive (9) and the 1st drive (8) are adjusted, the 1st tensioning wheel (4) passes through the 1st connecting shaft (34) and the 3rd
Sliding block (26) connects, and the 2nd tensioning wheel (5) is connect by the 2nd connecting shaft (35) with the 4th sliding block (27), and the 3rd tensioning wheel (6) passes through
3rd connecting shaft (36) is connect with the 5th sliding block (28), and the 4th tensioning wheel (7) is connected by the 4th connecting shaft (37) and the 6th sliding block (29)
It connects, the 1st tensioning wheel regulating device (18) adjusts the position of the 3rd sliding block (26) by the 3rd screw pair (30), and the 2nd tensioning wheel is adjusted
Device (19) adjusts the position of the 4th sliding block (27) by the 4th screw pair (31), and the 3rd tensioning wheel regulating device (20) passes through the 5th spiral shell
Rotation secondary (32) adjusts the position of the 5th sliding block (28), and the 4th tensioning wheel regulating device (21) adjusts the 6th by the 6th screw pair (33) and slides
The position of block (29), flaw detection sensor (13) are fixed on by the 2nd stent (15) in rack (42), and tachometer generator (14) passes through
3rd stent (16) is fixed in rack (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410803710.8A CN104535321B (en) | 2014-12-23 | 2014-12-23 | flexible bearing fatigue life test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410803710.8A CN104535321B (en) | 2014-12-23 | 2014-12-23 | flexible bearing fatigue life test device |
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| Publication Number | Publication Date |
|---|---|
| CN104535321A CN104535321A (en) | 2015-04-22 |
| CN104535321B true CN104535321B (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410803710.8A Active CN104535321B (en) | 2014-12-23 | 2014-12-23 | flexible bearing fatigue life test device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987816A (en) * | 2015-08-10 | 2016-10-05 | 上海凯研机械设备有限公司 | Flexible shaft test platform |
| CN105758642B (en) * | 2016-05-26 | 2018-10-23 | 上海大学 | A kind of following loading flexible bearing fatigue life test device |
| CN108692940B (en) | 2018-06-12 | 2023-11-24 | 华南理工大学 | Transmission shaft assembly for sequential test of flexible thin-wall bearing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100494545B1 (en) * | 2002-10-16 | 2005-06-10 | 현대자동차주식회사 | Durability test apparatus for ball bearing |
| JP2005121566A (en) * | 2003-10-20 | 2005-05-12 | Nsk Ltd | Multi-axis simultaneous rotation test apparatus |
| CN100526834C (en) * | 2007-10-09 | 2009-08-12 | 宁波摩士集团股份有限公司 | High/low-temperature impact life testing device especially for bearing |
| CN101699243B (en) * | 2009-09-23 | 2011-05-25 | 浙江八环轴承有限公司 | Machine for testing reliability of service life of electromagnetic clutch bearing of automotive air conditioner |
| CN101726410B (en) * | 2009-12-29 | 2011-02-09 | 浙江大学 | Bearing life tester and method based on high or low temperature impact and radial variable load |
-
2014
- 2014-12-23 CN CN201410803710.8A patent/CN104535321B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| The design of flexible bearing life test device;Long LIU et al.;《Applied Mechanical and Materials》;20140116;第861-864页，图1-5 * |
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| CN104535321A (en) | 2015-04-22 |
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