| 摘要 |
<p>1,192,843. Cutting apparatus. CONTRAVES A.G. 1 Aug., 1968 [1 Sept., 1967], No. 36765/68. Heading B4B. An apparatus for cutting foil material, such as paper, cardboard, plastics or metal, comprises a cutter 13 movable, in two co-ordinate directions X-Y, the cutter being mounted on a carrier 12 pivoted about a bearing 11 which is perpendicular to the surface of the material to be cut and is itself arranged to be rotated about an axis S passing through the centre of the cutting device. The bearing 11 is carried by a gear 14 which is rotatable about the axis S by means of a servomotor 15 mounted on a platform 10, the platform being movable in the two co-ordinate directions via servomotordriven gears 23, 33 meshing with racks 20 and 30 respectively. The servomotors are controlled by means of transmitters 25, 35 automatically reading the actual position of the platform 10 in relation to scales 20, 30 and feeding signals to error correcting devices 26, 36 respectively, the output signals from the latter devices operating the servomotor. The cutter 13 may be in the form of a knife blade (43, Fig. 2) or a freely rotatable cutting disc (53, Fig. 3); several such discs may be mounted on a carrier so that as one wears the carrier may be rotated to bring a sharp disc into the working position.</p> |
