期刊
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
卷 62, 期 -, 页码 1-12出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijmachtools.2012.04.007
关键词
Spindle vibration; Surface topography; Cutting force; PSD; Ultra-precision diamond turning
资金
- Research Grants Council of the Hong Kong Special Administrative Region, China [PolyU 5287/10E]
In ultra-precision ultra-precision diamond turning (UPDT), aerostatic bearing spindle vibration plays the major part in many factors that influence surface topographies. In this paper, a five-degree-of-freedom dynamic model for an aerostatic bearing spindle is built up to describe its dynamic responses, involving translational motions and tilting motions, and to analyze the effects on surface topography of the spindle vibration under different cutting processes in UPDT. It was found that the spindle processes at the axial natural frequency along the axial direction, the radial natural frequency along the radial directions and the twin tilting natural frequencies around the radial directions, and when cutting develops from outside to the center of the machined surface, the dominant effects of the spindle's tilting motions on surface topography gradually disappear and the axial translational motion produces a great influence on surface topography. This was identified by the experimental results. Crown Copyright (c) 2012 Published by Elsevier Ltd. All rights reserved.
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