錐桿節流之靜壓軸承工作檯阻尼特性探討

An investigation in Damping characteristics of Worktable Worktable supported by hydro-static bearing of tapered-spool restrictors

王建勛(CHIEN-HSUN WANG)

指導教授 ： 康淵

中原大學/工學院/機械工程研究所/碩士(2020年)

https://doi.org/10.6840/cycu202000768

摘要

本文研究錐桿節流器對靜壓軸承阻尼特性的影響，利用實驗驗證及數
值分析方法探討工作台的軸承幾何、撓性、節流參數、壓力補償設計參數，
及供油系統流量等控制參數對於油膜動剛度及油膜阻尼的影響。本研究的
方法是以諧調激勵振動理論建立油膜阻尼比尺度，用來作為軸承及其工作
台動態設計分析。分析結果提供靜壓軸承使用錐桿節流器補償油壓時的阻
尼特性，與等流量補償、毛細管節流器補償及薄膜節流器補償時的阻尼特性
做比較。分析結果提供在設計時增加液靜壓軸承的動剛度及阻尼之改善方
案。

關鍵字

錐桿節流器 ； 液靜壓軸承 ； 撓性工作台 ； 油膜阻尼比尺度

並列摘要

This project investigates the influence of tapered-spool type restrictors which
determines the damping characteristics of hydrostatic bearings，using numerical
analysis methods and experimental verification to study the influence of
worktable bearing geometry , flexibility, restriction parameter, design parameter
of pressure compensations, and control, parameters such as viscosity and flow
rate on dynamic stiffness and damping ratio will be obtained. The method in this
study is to establish the oil film damping ratio scale by the harmonic excitation
vibration theory, which is used for dynamic design analysis of the bearing with
worktable. measuring The analysis results provide the damping characteristics of
worktable supported by hydrostatic bearing of tapered-tpool restrictors. Compare
with the damping characteristics of membrane restrictors, capillary restrictors and
constant flow. The analysis results provide an improvement scheme for increasing
the dynamic stiffness and damping of hydrostatic bearing.

並列關鍵字

hydrostatic bearing ； flexible table ； dynamic response ； oil film damping ratio scale

參考文獻

[1] Malanoski, S. B. and A. M. Loeb, “The effect of the method compensation

on hydrostatic bearing stiffness,” Journal of Basic Engineering, vol. 83, no.

2, pp. 179-187, 1961.

[2] Degast, J. G. C., “A new type of controlled restrictors for compensating

hydrostatic bearings,” Proc, Seventh International Conference on Machine