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http://dx.doi.org/10.7736/KSPE.2014.31.7.635

Performance Evaluation of Hydrostatic Bearing Guided Rotary Table for Large Volume Multi-tasking Vertical Lathe  

Shim, Jongyoup (Ultraprecision Systems Lab., Korea Institute of Machinery & Materials)
Oh, Jeong-Seok (Ultraprecision Systems Lab., Korea Institute of Machinery & Materials)
Park, Chun-Hong (Ultraprecision Systems Lab., Korea Institute of Machinery & Materials)
Shin, Heung-Chul (KIHEUNG MACHINERY CO., LTD.)
Park, Woo-Sang (KIHEUNG MACHINERY CO., LTD.)
Kim, Min-Jae (KIHEUNG MACHINERY CO., LTD.)
Kim, Min-Soo (KIHEUNG MACHINERY CO., LTD.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.31, no.7, 2014 , pp. 635-642 More about this Journal
Abstract
The large volume multi-tasking vertical lathe was developed for machining the bearing parts for a wind power generator. Although the machined part is large in size high precision tolerances are required recently. One of the most important components to achieve this mission is the rotating table which holds and supports the part to be machined. The oil hydrostatic bearing is adopted for the thrust bearing and the rolling bearing for the radial bearing. In this article experimental performance evaluation and its analysis results are presented. The rotational accuracy of the table is assessed and the frequency domain analysis for the structural loop is performed. And in order to evaluate the structural characteristic of table the moment load experiment is performed. The rotational error motion is measured as below 10 ${\mu}m$ for the radial and axial direction and 22,800 Nm/arcsec of moment stiffness is achieved for the rotary table.
Keywords
Hydrostatic Bearing; Rotary Table; Vertical Lathe; Wind Power; Performance Evaluation;
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Times Cited By KSCI : 1  (Citation Analysis)
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