A Study on the Running Accuracy of an Externally Pressurized Gas Thrust Bearing : Rotor Run-Out Characteristics

概要

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To establish a fundamental concept for the precision design of a gas bearing, the static and dynamic run-out characteristics of a rotor supported by an externally pressurized gas-lubricated thrust-collar bearing are investigated in this paper. The concept is based on the theoretical results developed in the previous papers on load capacity fluctuation, which is caused by machining errors such as the out-of-perpendicularity of the rotor-end surface and the size deviation of supply holes of the bearing, as well as on the fundamental bearing characteristics such as stiffness and damping coefticient. The "averaging effect" for the rotor run-out characteristics is evaluated quantitatively. The experimental results for the amplitude of the rotor vibration coincide well with the theoretical results, which may confirm the validity of the theoretical model used in this study.
一般社団法人日本機械学会の論文
1991-09-15