Modeling and Analysis for the Transmission Characteristics of a Proposed Dual-Drive Hydrostatic Lead Screw System
- 8 February 2022
- journal article
- research article
- Published by ASME International in Journal of Tribology
- Vol. 144 (7)
- https://doi.org/10.1115/1.4052422
Abstract
This paper proposes a novel dual-drive hydrostatic lead screw system (DDHLS). The design enables a lower feed speed and a better transmission performance than the conventional hydrostatic lead screw (HLS). Considering the nut-misalignment, the lubricating mathematical model of the DDHLS is established based on the perturbation method and solved by the finite difference method. The influences of the nut-radial-displacement, the nut-tilt, and the dual-drivable design on the transmission performance of the DDHLS are researched. The results show the nut-misalignment can regularly reduce or increase the axial load capacity (ALC), the axial stiffness coefficient (ASC), and the axial damping coefficient (ADC). Significantly, the dual-drivable design can improve the axial load capacity and the axial stiffness coefficient while hardly affects the axial damping coefficient.Keywords
Funding Information
- National Natural Science Foundation of China (51875325)
- Natural Science Foundation of Shandong Province (ZR2019MEE003)
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