| 摘要 |
PURPOSE:To prevent from scattering of the cut chips easily and to maintain accuracy of balance correction excellently by sealing up by sticking sealing members thermally the cut marks of the corrected face after correcting the balance. CONSTITUTION:Cut holes 6(a) at the time of correcting the dynamic balance are provided to the upper end face of a balance ring 6 and also, cut holes 4(a) are provided to a balance ring 4. Then, these cut holes 4(a) and 6(a) are covered by the annular sealing members 16 and 17 respectively and the cut marks are sealed up by sticking these thermally. Since these sealing members are made of, for instance, fluoric films and are very thin and lightweight, the unbalance can be almost neglected. Accordingly, the scattering of the cut chips can be easily prevented and accuracy of the dynamic balance correction can be maintained excellently. |
