The dynamic parameters correlation assessment of the textile machine high-speed bearings in changed technological conditions

The paper describes the correlation of the changed manufacturing and technological conditions of the spinning device applicable in the textile industry with the change of the dynamic parameters of the spinning rotor bearings. Special ball bearings for textile machines are designed for high rotational speeds and relatively low loads. They are characterized by high dimensional accuracy and reliable running, which guarantees their great utility value. In the diagnostics of the spinning machine spindle high-speed bearings, absolute vibrations were measured according to the recommendation of STN ISO 10816-3 norm. The conducted experiments focused primarily on the assessment of the impact of the unstable technological process on the change of the monitored dynamic parameters. The measurements showed a statistical increase of the measured dynamic parameters by 50% when the spinning machine spindle rotor speed was increased by 15%. The measured vibration values showed that technological instability (rotor clogging by fiber during combing and subsequent braking and speed deceleration, a signal from a damaged drive belt, variable dynamic imbalance of the rotor, and at the same time an uneven bowl wear caused by the fiber friction) had a noticeable impact.