Paper Title:
Air Characteristics in Air Turbine Spindle of Ultra Precision Machines
  Abstract

Air Spindles have been used in ultra precision machines for several years due to their advantages such as high speed rotation, low friction, and low vibration, [1]. Air spindles are widely used in these machines for producing precise work pieces. Although, spindles function on a very complicated theoretical basis, [2, 3], their structure is very simple and consists of mainly a rotor and a stator. The rotor/stator could be made of different shapes. A cylindrical shape is the one commonly in use. The spindle designed in this work has a spherical configuration. It has been designed so that it could be moved without application of electric motor and only by a wind turbine system, [4]. The spindle studied in this research uses compressed air for rotor suspension, and has an air turbine for rotating its shaft. A thin air film acts as bearing layer between rotor and stator. In design procedure, operation parameters such as air inlet pressure for turbine, air inlet pressure for bearing, diameter of turbine nuzzles, diameter of bearing nuzzles, clearance between rotor and stator and etc. have been considered, [5]. A prototype spindle has been manufactured using design criteria. The influence of above mentioned parameters have been recognized through experiments.

  Info
Periodical
Defect and Diffusion Forum (Volumes 297-301)
Edited by
Andreas Öchsner, Graeme E. Murch, Ali Shokuhfar and João M.P.Q. Delgado
Pages
396-401
DOI
10.4028/www.scientific.net/DDF.297-301.396
Citation
M. Vahdati, E. Azimi, A. Shokuhfar, "Air Characteristics in Air Turbine Spindle of Ultra Precision Machines", Defect and Diffusion Forum, Vols. 297-301, pp. 396-401, 2010
Online since
April 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: E.U. Ubeku, E.A. Ogujor
Abstract:This paper presents the use of a user-interactive MATLAB programme for the design and the parameter estimation of a three-phase induction...
126
Authors: Ji Gang Wu, Xue Jun Li, Bai Hui Yao
Abstract:The faults of rotating machinery are monitored by fixing the sensors on rotor directly, which brings some problems such as difficulty in...
1010
Authors: Yun Dong Sha, Feng Tong Zhao, Jia Han, Xian Zhi Cui
Chapter 8: Measurement
Abstract:Nonsynchronous vibrations (NSVs) with high amplitude levels in the first rotor blades of a multi-stage axial compressor have been observed....
1816
Authors: Na Na He, Hong Zhang
Chapter 2: Dynamics of Mechanisms and Systems
Abstract:In this paper the rotor dynamic characters of the bearing system in turbocharger are researched. The computing method of rotor dynamic is...
651