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概要

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This paper deals with the imbalance phenomenon due to dynamic brake stop and its influence upon rotational accuracy of air spindle. The braking of spindle causes an apparent static imbalance phenomenon, under which the spindle behaves as if it were statically out of balance though the spindle itself is dynamically and hence statically balanced. When the spindle is statically balanced under the apparent imbalance state, the rotational accuracy of the spindle is deteriorated. The imbalance phenomenon is experimentally analysed. It is estimated that the phenomenon is caused by an residual magnetism. In order to eliminate the effect of magnetically induced imbalance, it is recommended to stop the spindle without dynamic braking prior to the static balancing. This procedure prevents the decrease in rotational accuracy of the spindle.
社団法人精密工学会の論文
1991-07-05