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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
Add:
No.9 Gaoguannong,Daxue Road,Hangzhou,China
P.C:
310009
E-mail:
meem_contribute@163.com
Abstract: For highprecision servo control of cylinders, fundamentally eliminating friction is of great significance. The air-floating piston is an important component of an air-floating frictionless cylinder. During the operation of the cylinder, the insufficient radial bearing capacity of the air-floating piston will contact the inner wall of the cylinder, and there is a problem of gas lubrication failure under radial load. In order to improve the radial load-bearing performance of the air suspension piston in a frictionless cylinder and minimize air consumption while achieving greater load-bearing capacity, a study on the radial load-bearing capacity of the air suspension piston was carried out,using a combination of finite element simulation and experiments.Firstly, Fluent software was used to simulate and analyze the effects of parameters such as supply pressure, eccentricity, and orifice diameter on the radial bearing capacity and air consumption of the air-floating piston.Then, based on comprehensive considerations, the optimal orifice diameter for the air-floating piston was selected, and a prototype of the piston was manufactured accordingly.Finally, in order to test the radial bearing capacity of the air-floating piston under different air supply pressures and eccentric conditions in actual conditions, a high-precision radial bearing capacity testing device using an air-floating frictionless cylinder as the loading device was designed and built.The research results indicatethat from a qualitative point of view, the trend of the simulation and test results is consistent,from a quantitative point of view, the coincidence between the test results and the simulation results is more than 90%.This research can provide a basis for the accuracy of the radial bearing capacity of the air bearing piston using Fluent software, and provide some guidance for the subsequent revision of the simulation model.
Key words: pneumatic transmission; frictionless cylinder; Fluent simulation optimization; gas lubrication; air supply pressure; throttle diameter; eccentricity
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2010 Zhejiang Information Institute of Mechinery Industry
Technical Support：Hangzhou Bory science and technology
