| 摘要 |
The present invention relates to a method for controlling the normal frequency of an intermediate roller of a calender by means of improved roller support. The method is characterised in that by means of the roller support in the control of the lowest nominal frequency of the movement mode of the roller or a roller position said lowest normal mode is shifted to a desired frequency range. The invention also relates to a vibration damper for damping the vibration of an intermediate roller of a calender and/or eliminating the barring phenomenon, for example, which damper includes a body part (4) and an upper disc spring (31) above it and a lower disc spring (32) below it. The damper is characterised in that the damper may be tuned to operate at a desired frequency and to be suitable for a desired tuning frequency by using at least one flexibility element (10, 11, 12, 13; 21, 22) in order to provide a mutual contact between at least the upper disc spring (31) and the body part (4) as desired. |
