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- W4243670551 abstract "The preload of the ball screw, applied between two nuts, is necessary for its high rigidity and accuracy. However large preload increases frictional resistance. Therefore, at high revolution, the temperature of the ball screw rises remarkably and its thermal expansion lowers its feed accuracy. The purpose of this study is to construct the device that can rotate the ball screw at high revolution, to measure its temperature rise and thermal expansion, and to analyse these results by heat transfer theory. In this experiment, preload, given by helical springs between two nuts, is constantly 980 N or 1 960 N. By this analysis, the boundary heat transfer coefficient of the ball screw is determined, and axial temperature distribution in steady state is nearly estimated." @default.
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- W4243670551 date "1984-01-01" @default.
- W4243670551 modified "2023-09-25" @default.
- W4243670551 doi "https://doi.org/10.2493/jjspe1933.50.646" @default.
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