CN107449380B - A kind of ball bearing oil film thickness measuring device - Google Patents

A kind of ball bearing oil film thickness measuring device Download PDF

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Publication number
CN107449380B
CN107449380B CN201710794113.7A CN201710794113A CN107449380B CN 107449380 B CN107449380 B CN 107449380B CN 201710794113 A CN201710794113 A CN 201710794113A CN 107449380 B CN107449380 B CN 107449380B
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China
Prior art keywords
ring
bearing
rolling
spin
oil film
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CN201710794113.7A
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CN107449380A (en
Inventor
闫柯
刘译励
朱永生
张进华
洪军
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Xian Jiaotong University
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Xian Jiaotong University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00Measuring arrangements characterised by the use of subsonic, sonic or ultrasonic vibrations
    • G01B17/02Measuring arrangements characterised by the use of subsonic, sonic or ultrasonic vibrations for measuring thickness
    • G01B17/025Measuring arrangements characterised by the use of subsonic, sonic or ultrasonic vibrations for measuring thickness for measuring thickness of coating

Abstract

A kind of ball bearing oil film thickness measuring device includes axis system, micro-ultrasonic wave sensor and nozzle support system, rolling element spin system for regulating angle and load and pressure detecting system;Micro-ultrasonic wave sensor is placed in the form of inner ring opens annular groove, and the oil film thickness at inner ring different location is measured.On the other hand, change inner ring and roller surface roughness, or increase pit in inner ring outer surface, stripe, latticed equal various forms texture, the inner ring and spin combined using different materials, under the rolling element of simulation bearing different contact condition and spin states, study contact zone surface quality, rolling element spin states and spin and interior loop material form the influence of effect to oil film, this experimental provision is spin and raceway in different materials, different surfaces quality, difference contact provides a kind of new approaches with oil film thickness measurement under spin states, experimental result has certain directive significance with design to the improvement of rolling bearing contact surface.

Description

A kind of ball bearing oil film thickness measuring device
Technical field
The invention belongs to rolling bearing lubrication technical field, in particular to a kind of ball bearing oil film thickness measuring device.
Background technique
There are many lubricating systems for rolling bearing, such as oil jet lubrication, oil-air lubrication, common feature are by rolling element Certain thickness lubricating oil film is formed between the components such as bearing internal external circle, reduces contact zone frictional heating, guarantees that bearing is good Operating status.If insufficient lubrication causes to be difficult to oil film or rupture of oil film, Bearing inner fretting wear aggravation, heat amount is sharply Increase, largely effects on bearing military service performance and service life.Therefore, the monitoring skill of service condition lower bearing contact zone oil film characteristic Art is most important.Since bearing interior space is narrow, it is difficult to directly be measured oil film thickness.Rolling bearing inner ring material, The meeting pair such as inner peripheral surface pattern and texture, the relative motion of spin material and surface roughness and ball and inner ring and contact condition Lubricating oil flow, rapidly enter bear inner ring grooved railway, contact zone film forming characteristics generates certain influence, therefore it is necessary to carry out bearing The research of oil film on-Line Monitor Device and method.
Summary of the invention
In order to overcome the defects of the prior art described above, the purpose of the present invention is to provide a kind of measurements of ball bearing oil film thickness Device and method contact and oil film under spin states in different materials, different surface morphology with texture, difference for spin with raceway Thickness measure provides a kind of new approaches, and experimental result has certain guidance with design to the improvement of rolling bearing contact surface Meaning.
To achieve the goals above, the technical solution of the present invention is as follows:
A kind of ball bearing oil film thickness measuring device includes axis system, micro-ultrasonic wave sensor and nozzle support system System, rolling element spin system for regulating angle and load and pressure detecting system;
The axis system includes main shaft 15, and main shaft 15 is connected with servo motor 20 by plum blossom yielding coupling 19, Inner bearing support of the main shaft 15 by the inner bearing and right side bearing block 16 of Left hand bearing block 1, the inner bearing of right side bearing block 16 It is positioned by bearing cover 17, the fluting inner ring 5 on main shaft 15 is positioned by left side axle sleeve 4, and left side axle sleeve 4 is locked using axis Tight nut 2 positions;
The micro-ultrasonic wave sensor and nozzle support system include be arranged in as needed it is micro- in fluting 5 slot of inner ring Type ultrasonic sensor 6, micro-ultrasonic wave sensor 6 are fixed by connecting rod, and connecting rod is inserted into the hole on sensor support base 3, are passed Fixed nozzle bracket 9 on sensor support 3, nozzle is inserted in nozzle holder 9, and sensor support base 3 and main shaft 15 are separated from each other;
The rolling element spin system for regulating angle includes the connecting rod rolling element 13 contacted with fluting inner ring 5, connecting rod rolling The other end connection sliding block 14 of kinetoplast 13, sliding block 14 move on arc guide rail 8;
The load and pressure detecting system includes the loading device 10 being arranged in circular arc 8, loading device 10 By loading the body contacts of idler wheel 12 and connecting rod rolling element 13, loads and be provided with pressure sensor 11 above idler wheel 12.
Fluting 5 outer surface of inner ring has the ring channel structures of different roughness and texture characteristic, inner ring outer surface For standard rolling bearing inner ring macro-size.
Bearing fluting inner ring 5 of the invention is one group of different materials through over mechanical processing and surface specially treated, tool There is the bearing inner race of different surface roughness Yu different surfaces texture, the slot opened is for placing for measuring the micro- of oil film thickness The outer surface macro-size of type ultrasonic sensor, the bearing inner race by surface specially treated is processed according to standard rolling bearing, is The standard size of deep groove ball bearing inner ring or angular contact ball bearing inner ring etc., the connecting rod rolling element 13 on inner ring is corresponding size Spin.
Secondly micro-ultrasonic wave sensor is placed in the slot of fluting inner ring, locates micro-ultrasonic wave sensor and wiring always In stationary state, and then the measurement of oil film thickness can be carried out under the conditions of simulating bearing real-world operation, improve device stability With reliability, the complexity of device is significantly reduced, there are three micro-ultrasonic wave sensor gauge heads, actual experiment platform gauge head number Mesh needs to choose according to experiment.
In the selection of last plum blossom yielding coupling 19, plum blossom yielding coupling be primarily adapted for use in starting frequently, positive and negative rotation, High speed, medium torque and the workplace for requiring high reliability, high-strength polyurethane elastic element wear-resistance and oil-resistance, bearing capacity Greatly, long service life, without lubrication, maintenance workload is small, can continuous longtime running.It is suitble to this experimental bench requirement.
Advantages of the present invention:
(1) the accurate quick measurement of ball bearing inner race sea surface oil slick thickness is realized.
(2) state simulation to the spin of rolling element difference, contact angle is realized.
(3) by changing inner ring and roller surface roughness, can study lubricating oil under different contact surface roughness at Film effect.
(4) by changing inner peripheral surface texture, the lubricating oil film-formation result under different inner peripheral surface texture can be studied.
(5) by changing inner ring and spin material, can study circle and spin material inside be respectively steel and ceramics, ceramics with Ceramics, ceramics and lubricating oil film-formation result when steel, steel and steel.
(6) loading device and pressure sensor cooperate, convenient for observing and adjusting the size of rolling element loading force.
(7) mode of idler wheel load can reduce the frictional resistance between rolling element and loading device, reduce energy loss.
Detailed description of the invention
Fig. 1 is the structural front view of apparatus of the present invention;
Fig. 2 is apparatus of the present invention micro-ultrasonic wave sensor arrangement details figure;
Fig. 3 is the structural schematic diagram of fluting inner ring 5 in Fig. 1, and wherein Fig. 3 a is side view, and Fig. 3 b is main view.
Specific embodiment
Specific implementation process of the present invention is further explained with reference to the accompanying drawing.
As shown in Figure 1 to Figure 2, a kind of ball bearing oil film thickness measuring device is sensed comprising axis system, miniature ultrasonic Device and nozzle support system, rolling element spin system for regulating angle and load and pressure detecting system;
The axis system includes main shaft 15, and main shaft 15 is connected with servo motor 20 by plum blossom yielding coupling 19, Main shaft 15 is driven by servo motor 20, and servo motor 20 is fixed by electric machine support 22 and screw 20, and main shaft 15 passes through left side The inner bearing support of the inner bearing and right side bearing block 16 of bearing block 1, the inner bearing of right side bearing block 16 pass through the shaft shoulder and tape spool The bearing cover 17 for holding screw 18 at seat positions, and referring to Fig. 3, the fluting inner ring 5 on main shaft 15 is positioned by left side axle sleeve 4, Left side axle sleeve 4 is positioned using axis locking nut 2, this ensure that axis system is reliable and stable, accurate positioning.
The micro-ultrasonic wave sensor and nozzle support system include be arranged in as needed it is micro- in fluting 5 slot of inner ring Type ultrasonic sensor 6, micro-ultrasonic wave sensor 6 are fixed by connecting rod, and connecting rod is inserted into the hole on sensor support base 3, are passed By 7 fixed nozzle bracket 9 of screw at nozzle holder on sensor support 3, be inserted with nozzle in nozzle holder 9, sensor support base 3 with Main shaft 15 is separated from each other, and is conveniently adjusted the distance between nozzle and fluting inner ring 5 in this way;
Referring to Fig. 2, the rolling element spin system for regulating angle includes the connecting rod rolling element contacted with fluting inner ring 5 13, connecting rod rolling element 13 can be rotated freely around the bar of its own, and the other end connection sliding block 14 of connecting rod rolling element 13, sliding block 14 exists It is moved on arc guide rail 8, sliding block 14 is the spin angle of adjustable connecting-rod rolling element 13, and simple and reliable for structure, angle is easy to adjust.
The load and pressure detecting system includes the loading device 10 being arranged in circular arc 8, loading device Axis is adjusted under normal circumstances to vertical with rolling element spin axis, loading device 10 is logical by the sliding block adjustment in circular arc 8 The body contacts of load idler wheel 12 and connecting rod rolling element 13 are crossed, loads and is provided with pressure sensor 11 above idler wheel 12, read pressure The size of loading force needed for the numerical value of force snesor 11 adjusts.
Fluting 5 outer surface of inner ring has the ring channel structures of different roughness and texture characteristic, inner ring outer surface For standard rolling bearing inner ring macro-size.
The spin of experiment fluting inner ring 5 used and connecting rod rolling element 13 is steel and steel, steel and ceramics, ceramics and steel, pottery Porcelain is made with ceramic different materials.
Micro-ultrasonic wave sensor 6 is vacantly placed in bearing inner race slot, and micro-ultrasonic wave sensor is fixed on sensor In support, 6 gauge head number of micro-ultrasonic wave sensor and location arrangements are not limited to 3 gauge heads according to needing to be arranged, be not limited to as Figure position.
Referring to Fig. 3, bearing slots inner ring 5 as one group of different materials through over mechanical processing and surface specially treated, tool There is the bearing inner race of different surface roughness Yu different surfaces texture, the slot A opened is for vacantly placing for measuring oil film thickness The micro-ultrasonic wave sensor 6 of degree, the outer surface macro-size of the fluting inner ring 5 by surface specially treated is according to standard rolling bearing Processing is the standard size of deep groove ball bearing inner ring or angular contact ball bearing inner ring etc., and the connecting rod rolling element 13 on inner ring is phase Answer the spin of size.
Secondly micro-ultrasonic wave sensor 6 is vacantly placed in the slot A of fluting inner ring, is made micro-ultrasonic wave sensor 6 and is matched Line remains static always, and then can carry out the measurement of oil film thickness under the conditions of simulating bearing real-world operation, improves dress Stability and dependability is set, significantly reduces the complexity of device, there are three micro-ultrasonic wave sensor gauge heads, actual experiment Platform gauge head number needs to choose according to experiment.
The working principle of the invention, comprising the following steps:
(1) sliding block 14 and loading device are adjusted to required angle, that is, adjusts the direction of rolling element spin direction and loading force.
(2) loading force is adjusted by loading device 10, loading force is adjusted to required size by observed pressure sensor 11.
(3) start lubricating system, can be oil jet lubrication system, oil gas lubricating system etc..By taking oil jet lubrication system as an example, this When lubricating oil from nozzle be ejected to fluting inner ring 5, play the role of prelubricated.
(4) start servo motor, until motor operating is stablized, lubricating oil is basicly stable in inner ring distribution, starts miniature super Sonic sensor detects and records the oil film thickness of several measurement positions.
(5) micro-ultrasonic wave sensor, servo motor, lubricating system are successively closed after detecting.
(6) replace different materials, different surface roughness, different surfaces texture inner ring, replacement different materials, different table The spin of surface roughness repeats (1) to (5) and carries out many experiments.

Claims (2)

1. a kind of ball bearing oil film thickness measuring device, which is characterized in that include axis system, micro-ultrasonic wave sensor and spray Mouth support system, rolling element spin system for regulating angle and load and pressure detecting system;
The axis system includes main shaft (15), and main shaft (15) passes through plum blossom yielding coupling (19) phase with servo motor (20) Even, inner bearing support of the main shaft (15) by the inner bearing and right side bearing block (16) of Left hand bearing block (1), right side bearing block (16) inner bearing is positioned by bearing cover (17), and the fluting inner ring (5) on main shaft (15) is fixed by left side axle sleeve (4) Position, left side axle sleeve (4) are positioned using axis with locking nut (2);
The micro-ultrasonic wave sensor is miniature in fluting inner ring (5) slot including being arranged in as needed with nozzle support system Ultrasonic sensor (6), micro-ultrasonic wave sensor (6) are fixed by connecting rod, and connecting rod is inserted into the hole on sensor support base (3) In, fixed nozzle bracket (9) on sensor support base (3) is inserted with nozzle, sensor support base (3) and main shaft in nozzle holder (9) (15) it is separated from each other;
The rolling element spin system for regulating angle includes the connecting rod rolling element (13) contacted with fluting inner ring (5), connecting rod rolling The other end connection sliding block (14) of kinetoplast (13), sliding block (14) move on arc guide rail (8);
The load and pressure detecting system includes the loading device (10) being arranged on circular arc (8), loading device (10) by the body contacts of load idler wheel (12) and connecting rod rolling element (13), load idler wheel (12) top is provided with pressure sensing Device (11).
2. a kind of ball bearing oil film thickness measuring device according to claim 1, which is characterized in that the fluting inner ring (5) outer surface has the ring channel structures of different roughness and texture characteristic, and inner ring outer surface is standard rolling bearing inner ring macroscopic view Size places fixed and hanging micro-ultrasonic wave sensor (6) inside the ring channel structures of inner ring, realizes that inner ring rotates through Without the continuous measurement of interference inside Cheng Zhongcong.
CN201710794113.7A 2017-09-06 2017-09-06 A kind of ball bearing oil film thickness measuring device Active CN107449380B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108645358B (en) * 2018-04-26 2019-10-29 大连理工大学 It is a kind of ultrasonic in machine thickness measuring contact condition control method
EP3805694A1 (en) * 2018-05-31 2021-04-14 Toray Industries, Inc. Liquid film thickness measurement method, measurement device, film production method
TWI732559B (en) * 2020-05-19 2021-07-01 國立勤益科技大學 Oil film measuring device of processing machine feed system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102997855A (en) * 2012-11-30 2013-03-27 清华大学 Experiment device for measuring thickness of lubricating liquid film under contact between spherical surfaces
CN103615994A (en) * 2013-11-06 2014-03-05 西安交通大学 Device and method for testing thickness of lubricating oil film of rolling bearing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102997855A (en) * 2012-11-30 2013-03-27 清华大学 Experiment device for measuring thickness of lubricating liquid film under contact between spherical surfaces
CN103615994A (en) * 2013-11-06 2014-03-05 西安交通大学 Device and method for testing thickness of lubricating oil film of rolling bearing

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