| 摘要 |
<p>In the apparatus disclosed herein, the hub (3) of the circular or disc-saw is supported, at the end close to the saw, by at least one swingable radial bearing (6), while at the opposite end, driven for rotation by the pulley (28), said hub is supported by means comprising a servo-control (10-12) by which the axis of the hub can be maintained in line with the axis of rotation or said axes can be spaced apart angularly by rotation about a common point thereof whereby the teeth of the saw will have a composite movement of rotation and symmetric side oscillation, with a frequency which is proportional to the speed of rotation of the saw and with an amplitude which is proportional to said spacing apart of the axes and to the radius of the saw. In the last said conditions the saw is used to cut a score in the panels which will be then cut through by the saw while driven only in rotation.</p> |
