熱的閉ループ概念による工作機械主軸系の熱特性解析 : 高速主軸アダプタの熱変形緩和効果

抄録

The thermal deformation of machine tool spindles has recently become the most important problem to materialize the manufacturing system for the product with higher accuracy and performance. In order to solve such problems, a large number of investigatioins so far has been dealt with reducing the thermal deformation of the spindle mainly caused by internal heat sources such as bearings. However, there is no effective model to express the dynamic and thermal behavior of the spindle bearing system in actual rotational condition. In this paper, therefore, to establish the dynamic simulation model of thermal characteristics in machine tool spindle systems with the rolling bearing, the thermal closed-loop concept of the thermal behavior of machine tool spindles has been proposed. The validity of the proposed model has also been verified through experimental investigations under various rotational conditions. In addition, the thermal behavior and effectiveness of the high-speed spindle adapter have been investigated using the proposed model.