Quantum mechanics

Control (management)

Phase (matter)

Engineering

Ball screw

Vibration

Computer science

Acoustics

Ball (mathematics)

Physics

Amplitude

Mathematics

Optics

Artificial intelligence

Geometry

Structural engineering

Phase difference

Control theory (sociology)

Mechanics

Mechanical Systems and Signal Processing

Ball passage vibration arising during recirculation of rolling elements is a limitation of high-precision performance associated with ball screw. A relatively deep understanding of this phenomenon when rolling balls leave load area and enter circulation channel has been achieved by now. However, few mechanical models are established for calculation of rolling ball contact deformation and force inside nut while moving by taking into account transient phase at import and export of circulation channel. In this work, we present a general time-dependent dynamic model for description of ball motion and axial periodic micro fluctuation within ball screw subjected to external load. The numerical simulation is employed to deal with equation of motion including segmented restoring force function. Effects of applied load, preload and screw rotational speed on dynamic response are discussed theoretically. Reduced vibration amplitude may be realized by small ball diameter and phase difference between ball groupings. Proposed model is experimentally illustrated.

A time-dependent dynamic model for ball passage vibration analysis of recirculation ball screw mechanism