Dynamic analysis of ball screw feed system with abrupt-change-nonlinear drive stiffness
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 21 October 2021
Issue publication date: 7 December 2021
Abstract
Purpose
For ball screw feed system, a sudden start or stop has a great influence on the transmission stiffness, so the axial stiffness mutation of feed system will occur. The purpose of this paper is to study the influence of acceleration on the transmission stiffness and dynamic characteristics of the ball screw feed system.
Design/methodology/approach
Taking the ball screw feed system as a research object, on the basis of the Hertz contact theory and the mixed element method, axial stiffness model and dynamic model are established. And the system stability was analyzed by the time history diagram and Phase-plane portrait diagram. The feed system was analyzed theoretically and experimentally, the experimental results are in good agreement with the model results.
Findings
Lead screw lead angle, preload, load and start acceleration affected ball-screw pair, bearing and transmission stiffness. And the load, nut contact stiffness, bearing contact stiffness, preload have a large effect on the transmission stiffness. The results show that a certain acceleration value will make the axial stiffness abrupt change.
Originality/value
This research provides a useful theoretical support for ensuring a good dynamic for the ball screw feed system.
Keywords
Acknowledgements
This research is financially supported by the National Natural Science Foundation of China (51775432).
Citation
Gao, F., Li, P.-P. and Li, Y. (2021), "Dynamic analysis of ball screw feed system with abrupt-change-nonlinear drive stiffness", Industrial Lubrication and Tribology, Vol. 73 No. 10, pp. 1258-1266. https://doi.org/10.1108/ILT-06-2021-0196
Publisher
:Emerald Publishing Limited
Copyright © 2021, Emerald Publishing Limited