CN102353540B - Slip testing apparatus for high-speed rolling bearing - Google Patents

Slip testing apparatus for high-speed rolling bearing Download PDF

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Publication number
CN102353540B
CN102353540B CN 201110180089 CN201110180089A CN102353540B CN 102353540 B CN102353540 B CN 102353540B CN 201110180089 CN201110180089 CN 201110180089 CN 201110180089 A CN201110180089 A CN 201110180089A CN 102353540 B CN102353540 B CN 102353540B
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China
Prior art keywords
bearing
speed electric
electric spindle
low speed
main shaft
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Expired - Fee Related
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CN 201110180089
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CN102353540A (en
Inventor
陈渭
李军宁
吕少璞
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Xian Jiaotong University
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Xian Jiaotong University
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Publication of CN102353540B publication Critical patent/CN102353540B/en
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Abstract

The invention discloses a slip testing apparatus for a high-speed rolling bearing. The apparatus comprises a high speed electric spindle and a low speed electric spindle, wherein the high speed electric spindle and the low speed electric spindle are arranged on a support and axial directions of the two spindles are opposite to each other; a movable bearing and a loading mechanism having a force sensor are arranged between a base plate of the high speed electric spindle and the support. A rolling element is connected with a front end of the high speed electric spindle; a ring body of a tested bearing is connected with a front end of the low speed electric spindle; and a radial load is exerted on the ring body of the tested bearing by the rolling element through the loading mechanism. The high speed electric spindle and the low speed electric spindle are provided with displacement sensors for determining rotating speeds; frequency converters are connected with the high speed electric spindle and the low speed electric spindle; and a data collection processing system controls rotating speeds of the high speed electric spindle and the low speed electric spindle through the frequency converters. And a lubricating device and an infrared temperature measuring device are arranged nearby a contacting portion where the ring body of the tested bearing and the rolling element are contacted; the infrared temperature measuring device inputs a collected oil film temperature signal or a collected contacting portion temperature signal to the data collection processing system; and the force sensor inputs a loading signal to the data collection processing system through a signal amplifier.

Description

A kind of high speed roller bearing slippage test unit
Technical field
The invention belongs to bearing test device, be specifically related to a kind of high speed roller bearing slippage test unit.
Background technology
Rolling bearing is to use a kind of important mechanical basic part very widely.Development of modern industry is had higher requirement to the serviceability of rolling bearing, and high rotating speed, long-life bearing more and more are subjected to user's favor.But under the high speed conditions spigot bearing to skid with rubbing wound be to influence the bearing key factor in serviceable life always.Therefore, the skid research and analysis of failure mechanism of high speed roller bearing is seemed particularly important.At present, prior art and experimental technique are mostly analyzed rolling bearing integral body as research object, because the complicacy of rolling bearing influence factor and the uncertainty that rolling body moves in bearing, the result that said method obtains is often not too accurate, can not disclose rolling bearing well and skid and the essential mechanism that lost efficacy.Simultaneously, skid and cause not necessarily that the bearing cunning is rubbed and cause surface abrasion and global failure.From existing document analysis as can be known, lack for causing that bearing rubs the mechanism Journal of Sex Research of wound under definite slippage factor combination.
Summary of the invention
The object of the invention is to provide a kind of simple and feasible high speed roller bearing slippage test unit, by dynamic the contact situation of simulation rolling bearing Internal and external cycle with rolling body, analyze the profound mechanism that high speed roller bearing under each parameter role skids and lost efficacy, and then can influence principal element that the bearing cunning rubs with serviceable life and the reliability of raising rolling bearing by optimizing.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
A kind of high speed roller bearing slippage test unit is characterized in that, is included in the high, low speed electricity main shaft that axially is oppositely arranged on the support, wherein is provided with expansion bearing and the load maintainer that has the power sensor between the base plate of high-speed electric main shaft and the support; Described high-speed electric main shaft front end connects the interchangeable rolling body, and low speed electricity front-end of spindle connects the circle body that is tried bearing by anchor clamps, and rolling body is applied radial load by load maintainer to trying the bearing circle body; Be equipped with the displacement transducer of measuring rotating speed on the described high, low speed electricity main shaft, be connected with the data acquisition processing system signal by transmitter; High, low speed electricity main shaft all is connected with frequency converter, and data acquisition processing system is by the rotating speed of Frequency Converter Control high, low speed electricity main shaft; Tried to be provided with lubricating system and infrared thermometer near bearing circle body and the rolling body contact site, infrared thermometer inputs to data acquisition processing system with oil film temperature or the contact site temperature signal of gathering, and the power sensor inputs to data acquisition processing system by signal amplifier with load signal.
In the such scheme, described expansion bearing comprises a bearing seat that is connected with the high-speed electric main shaft base plate, and this bearing seat is connected on the support by a cushion block.Described anchor clamps comprise chuck, are with the tensioning cover on it, and chuck and tensioning cover contact for the axial conical surface, and the tensioning cover is along the circumferential direction installed the circle body that is tried bearing outward, tensioning cover, the circle body that tried bearing are fixed on the chuck in the lump with bolt by gland.
The present invention compared with prior art, have the following advantages and the high-lighting effect: can simulate in the rolling bearing flexibly or the dynamic situation that contacts of outer ring and rolling body, each mainly influences parameter is rubbed wound to rolling bearing rupture of oil film and surface influence convenient research, and then can analyze under each parameter role the high speed roller bearing Failure Mechanism of skidding, and have simple in structurely, be easy to expansion, install, debugging is convenient, reliable, advantage such as with low cost.
Description of drawings
Fig. 1 is the structure principle chart of apparatus of the present invention.
Fig. 2 is tried bearing circle body and anchor clamps connection diagram among Fig. 1.
Fig. 3 rubs the front and rear surfaces shape appearance figure for the sample cunning.Wherein Fig. 3 a is the inner ring original graph; Fig. 3 b is that inner ring rubs wound figure; Fig. 3 c is the rolling body original graph; Fig. 3 d is that rolling body rubs wound figure.
Description of symbols among Fig. 1, Fig. 2: 1-support; The 2-signal amplifier; 3,28-bolt; The 4-cushion block; The 5-bearing seat; The 6-bearing cover; 7-power sensor; The 8-load maintainer; 9,23-frequency converter; 10,21-cooling device; The 11-high-speed electric main shaft; 12,16-displacement transducer; The 13-rolling body; The 14-lubricating system; The 15-infrared thermometer; 17-low speed electricity main shaft; 18,19-transmitter; The 20-data acquisition processing system; The 22-pull bar; The 24-chuck; 25-tensioning cover; The 26-inner ring; The 27-gland.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, but not as to unique restriction of the present invention.
With reference to Fig. 1, a kind of high speed roller bearing slippage test unit is included in the high, low speed electricity main shaft 11,17 that axially is oppositely arranged on the support 1, wherein is provided with expansion bearing and the load maintainer 8 that has power sensor 7 between the base plate of high-speed electric main shaft and the support; Expansion bearing comprises a bearing seat 5 that is connected with the high-speed electric main shaft base plate, and this bearing seat is connected on the support by bolt 3 by a cushion block 4.The high-speed electric main shaft front end connects interchangeable rolling body 13, and low speed electricity front-end of spindle connects the circle body (inner ring or outer ring) that is tried bearing by anchor clamps, and rolling body is tried the bearing circle body by 8 pairs of load maintainers and applies radial load; Be respectively equipped with the displacement transducer 12,16 of measuring rotating speed on the high, low speed electricity main shaft, be connected with data acquisition processing system 20 signals by transmitter 19,18 respectively; High, low speed electricity main shaft is connected with frequency converter 9,23 respectively, and data acquisition processing system is by the rotating speed of frequency converter 9,23 control high, low speed electricity main shafts; Tried to be provided with lubricating system 14 and the infrared thermometer 15 that peristaltic pump is controlled near bearing circle body and the rolling body contact site, infrared thermometer inputs to data acquisition processing system with oil film temperature or the contact site temperature signal of gathering, and data acquisition processing system can change lubrication circumstances by changing lubricating fluid model and flow.
Power sensor 7 inputs to data acquisition processing system by signal amplifier 2 with load signal.High, low speed electricity main shaft also is connected with water-cooled cooling device 10,21 respectively.Adopt multifunctional data acquisition card in the data acquisition processing system 20, can gather the high, low speed electricity main shaft 11 that displacement transducer 12 and 16 passes back, 17 displacement signal, through being converted to rotary speed information, by this frequency converter 9 and 23 default rotating speeds are carried out closed-loop control, thereby the control slip is in the level of regulation.
The present embodiment device can and be tried manufacturing and the rigging error of bearing circle body by control high, low speed electricity main shaft 11 and 17, test rolling body 13, guarantee that the test piece contact site beats as far as possible little, to reduce the excessive influence to experimental result of beating owing to the high speed rotational workpieces, also guarantee the security of testing simultaneously.
The base plate that the high-speed electric main shaft 11 of rolling body 13 is housed can vertically rotate around the fulcrum of bearing seat 5, and the flexibility that is conducive to load changes; By the thickness of adjustment cushion block 4 and the lifting of bolt 3, guarantee that rolling body 13 and bearing inside/outside circle level are tangent, avoid unbalance loading.It is the line contact that the adjustment rolling body contacts it with the inside/outside circle, and line parallel among both.
Because the situation that needs test different loads lower bearing to skid is so require the suffered radial load of bearing adjustable flexibly.Below high-speed electric main shaft base plate right-hand member, connect power sensor 8 with the closely-pitched screw rod, utilize lever principle to load by moving up and down of control double nut, apply different radial loads to the rolling body end, this load information can and be fed back to adjust in real time by the data acquisition process programmed acquisition.This loading procedure impacts little, simple in structure, dependable performance.
As shown in Figure 2, anchor clamps comprise chuck 24, are with tensioning cover 25 on it, be conducive to tensioning, fine setting and the loading and unloading of test specimen, chuck contacts for the axial conical surface with the tensioning cover, be conducive to the location and clamp, along the circumferential direction install inner ring 26 outside the tensioning cover 25, by gland 27 usefulness bolts 28 tensioning cover, inner ring are fixed on the chuck in the lump.
The principle of work of apparatus of the present invention is: set the original frequency of high, low speed electricity spindle inverters according to trying the desired slip of bearing, connect cooling device and lubricating system, via rolling body the circle body that is tried bearing is applied radial load by load maintainer; After on-test, two the electric main shafts 11 of data acquisition processing system by gathering two displacement transducers 12,16 and pass back respectively, 17 and the actual displacement of workpiece junction, and be converted to tach signal, by comparing to revise rotating speed with the rotating speed of setting, carry out at certain slip thereby control test.The circle body contact position oil film temperature that data acquisition processing system is caught rolling body by contactless infrared sensor and tried bearing changes lubricating oil model and flow to obtain the rupture of oil film situation by lubricating system; Data acquisition processing system is by the load maintainer control load, by changing the sample rolling body and being tried the circle body of bearing and then change workpiece exterior appearance and performance parameter, test unit of the present invention can be simulated the dynamic situation that contacts of rolling bearing Internal and external cycle and rolling body easily, studies the profound mechanism that high speed roller bearing skids and lost efficacy under each parameter role.This device has simple in structure, is easy to expansion, installs, debugs advantages such as convenient, reliable, with low cost.
Fig. 3 rubs the front and rear surfaces shape appearance figure for rolling body 13 and certain sample inner ring cunning.The sliding behavior of rubbing is designed to take place under certain slippage combination.In Fig. 3, contain various surface topography data and information, by corresponding with the contact region oil film temperature data of infrared thermometer 15 collections, each mainly influences parameter the influence of wound is rubbed in rolling bearing rupture of oil film and surface can to make things convenient for research by this, and then can analyze under each parameter role the high speed roller bearing Failure Mechanism of skidding.

Claims (3)

1. a high speed roller bearing slippage test unit is characterized in that, is included in the high, low speed electricity main shaft that axially is oppositely arranged on the support, wherein is provided with expansion bearing and the load maintainer that has the power sensor between the base plate of high-speed electric main shaft and the support; Described high-speed electric main shaft front end connects the interchangeable rolling body, and low speed electricity front-end of spindle connects the circle body that is tried bearing by anchor clamps, and rolling body is applied radial load by load maintainer to trying the bearing circle body; Be equipped with the displacement transducer of measuring rotating speed on the described high, low speed electricity main shaft, be connected with the data acquisition processing system signal by transmitter; High, low speed electricity main shaft all is connected with frequency converter, and data acquisition processing system is by the rotating speed of Frequency Converter Control high, low speed electricity main shaft; Tried to be provided with lubricating system and infrared thermometer near bearing circle body and the rolling body contact site, infrared thermometer inputs to data acquisition processing system with oil film temperature or the contact site temperature signal of gathering, and the power sensor inputs to data acquisition processing system by signal amplifier with load signal.
2. high speed roller bearing slippage test unit as claimed in claim 1 is characterized in that, described expansion bearing comprises a bearing seat that is connected with the high-speed electric main shaft base plate, and this bearing seat is connected on the support by a cushion block.
3. high speed roller bearing slippage test unit as claimed in claim 1, it is characterized in that, described anchor clamps comprise chuck, be with the tensioning cover on it, chuck contacts for the axial conical surface with the tensioning cover, the outer installing along the circumferential direction of tensioning cover is tried the circle body of bearing, tensioning cover, the circle body that tried bearing is fixed on the chuck in the lump with bolt by gland.
CN 201110180089 2011-06-29 2011-06-29 Slip testing apparatus for high-speed rolling bearing Expired - Fee Related CN102353540B (en)

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Application Number Priority Date Filing Date Title
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CN102353540B true CN102353540B (en) 2013-07-10

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CN102944423B (en) * 2012-11-13 2016-01-20 沈阳黎明航空发动机(集团)有限责任公司 A kind of aeromotor stick roller bearing is sliding rubs troubleshooting methodology
CN106198019B (en) * 2016-06-30 2018-10-23 西安交通大学 A kind of roll sliding friction life-cycle test device based on interface friction performance monitoring
CN107063688B (en) * 2017-04-05 2019-06-25 上海大学 Match angular contact ball bearing Dynamic wear test device
CN110160788B (en) * 2019-06-27 2021-07-02 中广核核电运营有限公司 Rolling bearing slipping research experiment table
CN111487058B (en) * 2020-04-27 2022-05-24 河南科技大学 Rolling bearing slip test method
CN114738389B (en) * 2022-03-29 2023-03-28 南京航空航天大学 Intelligent bearing system for slip diagnosis and slip diagnosis prediction method

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