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http://dx.doi.org/10.7735/ksmte.2012.21.2.208

Performance Evaluation of Radial Error of a Rotary Table at Five-axis Machine Tool  

Lee, Kwang-Il (경북대학교 일반대학원 기계공학과)
Yang, Seung-Han (경북대학교 기계공학부)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.21, no.2, 2012 , pp. 208-213 More about this Journal
Abstract
In this paper, the radial error of a rotary table at five-axis machine tool is evaluated by utilizing ISO 230-2 and estimation method using double ball-bar. The geometric error of a rotary table is defined as position dependent geometric errors or position independent geometric errors according to their physical character. Then estimation method of geometric errors using double ball-bar is simply summarized including measurement path, parametric modeling and least squares approach. To estimate representative radial error, offset error, set-up error which affect to the double ball-bar data, mean value of measured data including CCW/CW-direction are used at estimation process. Radial errors are separated from measured data and used for evaluation with ISO 230-2. Finally, suggested evaluation method is applied to a rotary table at five-axis machine tool and its result is analyzed to improve the accuracy of the rotary table.
Keywords
Five-axis machine tool; Rotary table; Geometric error; Radial error; Offset error; Set-up error; Double ball-bar;
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Times Cited By KSCI : 1  (Citation Analysis)
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