| 摘要 |
Precision displacement device for a member along a trajectory. A fixed member 1 is provided with a plurality of pairs of runners 3, 4 spaced out by a pitch P which are spaced within each pair by a distance d which is equal, within the operational play, to the thickness of the screw thread 11 of a screw 10 which engages between the runners 3, 4 of at least one pair, this screw 10 being mounted and rotatably driven on a movable member 8 sliding freely along slides 6 parallel to the fixed member 1. <IMAGE>
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