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http://dx.doi.org/10.9725/kstle.2007.23.3.083

Analyses and Measurements of Rotational Accuracy for Journal Shaft in a Scroll Compressor  

Park, Sang-Shin (School of Mechanical Engineering, Yeungnam University)
Kim, Gyu-Ha (Graduate School, Dept. of Mechatronics, Gwangju Institute of Science and Technology)
Lee, Jin-Kab (Dept. of Automation Systems, Kyonggi Institute of Technology)
Publication Information
Tribology and Lubricants / v.23, no.3, 2007 , pp. 83-88 More about this Journal
Abstract
This paper presents measurement processes of rotational accuracy and comparison of theoretical values in the main bearing of scroll compressor. The main bearing is a type of oil journal bearing, but it has an axial or helical groove. The generalized coordinate system method, which can handle this groove, is applied to calculate the pressure profile in the journal bearing. The orbits of journal shaft are calculated corresponding to the compressed gas forces and bearing reaction forces. Then, the orbits are measured using three-point method. The results are compared to that from analyses.
Keywords
Rotational accuracy; Roundness error; Scroll compressor; and Three-point method;
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