Driving mechanism of mute life testing machine of rolling bearing

Abstract

The invention discloses a driving mechanism of a mute life testing machine of a rolling bearing. The driving mechanism comprises a driving motor, a testing central spindle, a front hydrostatic pressure main shaft unit and a rear hydrostatic pressure main shaft unit, wherein the front hydrostatic pressure main shaft unit and the rear hydrostatic pressure main shaft unit supply oil through a main shaft oil supply device separately installed with the driving mechanism; a rear end of the testing central spindle is sleeved on an inner diameter of an inner ring of the rolling bearing to be tested in a sliding mode; a front end of the testing central spindle is connected with a rear end of a rear main shaft through a Morse cone; and a front end of a front main shaft is in synchronous transmission connection with an output shaft of the driving motor. The driving mechanism has the advantages that: the testing machine is low in starting temperature, small in background vibration, small in vibration interference of the background vibration or external vibration to the rolling bearing to be tested, high in testing rotation speed, stable in rotation speed, large in testing load, high in driving precision and prolonged in driving precision service life; a radial internal clearance of the rolling bearing to be tested is not changed by connection of the driving mechanism and the inner ring of the rolling bearing to be tested, so that influence factors, such as an installation matching working condition of the inner ring of the rolling bearing to be tested to a testing result is eliminated.

Description

technical field [0001] The invention relates to a driving mechanism of a silent life testing machine for rolling bearings. Background technique [0002] Since the Second World War, rolling bearing vibration measurement equipment has come out continuously, such as the B1010 Andrew meter of the American Bendix company, the MGG11 rolling bearing vibration measuring instrument of the German FAG company, the S0910 rolling bearing vibration acceleration measuring instrument developed by the Luoyang Bearing Research Institute and the Hangzhou Bearing Test Research Center. BVT series rolling bearing vibration velocity measuring instrument developed. What these instruments measure and evaluate is the silent quality of the rolling bearing at the time of testing (also referred to as vibration and noise quality in general literature), and cannot evaluate the quiet life quality of the tested rolling bearing, that is, how much the tested rolling bearing operates in this state. After a lo...

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Problems solved by technology

There are three main defects in this method: First, the method uses simulation or real working conditions, the test period is long, and the test cost is large

Because general rolling bearings, especially rolling bearings of air conditioners and office supplies that require high quiet quality, have a small load under the working conditions, and the test period is very long under the condition of small loads. More than one year, so the test cost is relatively high; second, this method uses the noise measurement method to evaluate the length of the silent life of the rolling bearing, the noise measurement has high requirements on the environmental noise, the test can only be carried out in the noise room, and the construction cost of the noise room is relatively high , also resulting in high test costs; third, this method adopts the actual working condition test, and its evaluation results are only applicable to this working condition, which is not universal, and is not suitable for the manufacturing process diagnosis or product quality assessment of rolling bearing manufacturers.

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