| 摘要 |
In a device for the translatory positioning of a platform ( 1 ), in particular a tool mount, with articulated rods ( 2 a, 2 'a 9 of invariable length, whose first ends are hinged to he platform ( 1 ), and whose second ends are coupled with respectively independent rail-mounted slide blocks ( 3 ), wherein the coupling points ( 9 ) on the platform ( 1 ) and coupling points ( 11 ) on the sliding blocks ( 3 ) respectively do not lie on a straight line, and the articulated rods ( 2 a , 2' a) do not run parallel to either each other or a shared plane, only three independent sliding blocks ( 3 ) and accompanying initial articulated rods ( 2 a , 2' a) are present. In a first variant, at least one of the coupling points ( 11 ) on the sliding blocks ( 3 ) is offset relative to the rail axis ( 4 a), and all sliding blocks ( 3 ) are arranged on the same rail ( 4 ). In a second variant, all sliding block ( 3 ) are arranged on the same side horizontally next to the space provided for postioning the platform ( 1 ), and essentially run parallel to each other. Three restrictive guides ( 2 b; 23-27 ) are formed for the platform ( 1 ), which are each secured to a sliding block ( 3 ) or the accompanying first articulated rod ( 2 a, 2' a), and each permit one rotation of the platform ( 1 ) relative to the sliding block ( 3 ) only around two rotational axes, while preventing rotation around a third rotational axis, wherein the respective third rotational axes do not run parallel to each other, and do not lie in a shared plane. |
