| 摘要 |
<p>The invention relates to surface-working of logs, such as pillars or beams, with a rotating cutting-edge unit (23). These days the working is done in such a way that the log to be worked is rotating. The efficiency is low in this case, especially with a long and crooked log. The hollow-rotor principle is adapted in the method according to the invention, where the log (1) is fed without rotation through the rotor (4). The revolving arms (7), fastened with joints to the rotor (4), press the rotating cutting-edge units (23) against the log (1). The cutting-edge units (23) are propelled by the rotating movement of the rotor (4). The rotational speed of the cutting-edge units (23) is regulated by changing the relative speed of rotation of the frame (5), in relation to the rotational speed of the rotor (4). The working depth is regulated by changing the position of the support (24) leaning against the log to be worked, in relation to the position of the cutting-edge unit (23). The position is changed in radial direction of the log. The cutting-edge units (23) are moved to the log (1) surface by connecting a part of the revolving arm (7) to the log (2) in such a way that a moment is created when the rotor (4) rotates. The moment strives to turn the revolving arm (7) away from the center of the log.</p> |
