日本機械学会論文集C編
Online ISSN : 1884-8354
一般論文
超精密加工機の動特性評価(衝撃加振試験による案内機構の剛性評価)
甲斐 義章福田 将彦松原 厚河野 大輔
著者情報
ジャーナル フリー

79 巻 (2013) 808 号 p. 4624-4633

詳細
PDFをダウンロード (1295K) 発行機関連絡先
抄録

This study discuss the dynamic stiffness of guideways of a ultra-precision machine tools. V-V roller guideways have been employed in ultra-precision machine tools, as they can provide very smooth motion and good straightness. Recently, general linear ball guideways are also employed in ultra-precision machine tools. In the design of the machines, it is necessary to obtain the stiffness of these guideways. Therefore an identification method of the guideway stiffness is verified in this paper. In this method, the guideway stiffness is identified from the natural frequency of the moving body. First, the impact test is carried out for an ultra-precision machine tool to obtain the vibration mode of its moving body. Next, a simple vibration model is developed based on the obtained vibration mode to identify the equivalent stiffness of the guideways. Then, the static stiffness of the guideways is measured for the verification of the identified equivalent stiffness. For further verification, natural frequencies of the moving body are calculated by FEM with the identified equivalent stiffness and compared with the measured natural frequencies. The identified equivalent stiffness agreed well with the measured static stiffness. Furthermore, the natural frequencies were calculated almost correctly with the identified equivalent stiffness.

著者関連情報
© 2013 一般社団法人 日本機械学会
前の記事 次の記事
feedback
Top