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j.precisioneng.2012.02.006.pdf2.13 MBAdobe PDF見る/開く
タイトル: Analysis method for investigating the influence of mechanical components on dynamic mechanical error of machine tools
著者: Kono, Daisuke  kyouindb  KAKEN_id
Matsubara, Atsushi  kyouindb  KAKEN_id
Nagaoka, Kotaro
Yamazaki, Kazuo
著者名の別形: 河野, 大輔
キーワード: Dynamic mechanical error
Dynamic response
High-precision machine tools
Analysis method
発行日: Jul-2012
出版者: Elsevier Inc.
誌名: Precision Engineering
巻: 36
号: 3
開始ページ: 477
終了ページ: 484
抄録: In machine tools, the difference between the position of the tool center point and that of position detectors of the control system leads to a dynamic mechanical error, which is obtained as the difference between the feedback-controlled table position and the position of the tool relative to the table (tool–table relative position). In this paper, analysis methods are proposed to roughly determine the component of the mechanical system that causes the dynamic mechanical error. Two methods, a two-encoders method and a four-accelerators method, for investigating the influence of the mechanical component on the dynamic mechanical error are proposed. In both methods, the frequency response function between the feedback-controlled table position and the tool–table relative position is evaluated. By the proposed methods, the dynamic mechanical error of a high-precision machining center in the X and Y directions is analyzed for frequencies up to 200 Hz. It was found that the entire frequency range could be divided into three distinct subranges depending on how the component of the mechanical system influences the dynamic mechanical error at different frequencies. The analysis results indicated that in the low-frequency range, the dynamic response of the driven component plays a dominant role in influencing the dynamic mechanical error. Then, the dynamic mechanical error of the experimental machine was measured for small circular motions. The dynamic mechanical error occurred at the micrometer level. The dynamic mechanical error can be estimated from the frequency response function measured by the proposed method.
著作権等: © 2012 Elsevier Inc.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。This is not the published version. Please cite only the published version.
URI: http://hdl.handle.net/2433/155807
DOI(出版社版): 10.1016/j.precisioneng.2012.02.006
出現コレクション:学術雑誌掲載論文等

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