| 摘要 |
<p>The invention relates to a linear guideway arrangement (10) comprising: two pairs of guide rods (18, 20) for guiding a carriage (28). Each one of the pairs of guide rods (18, 20) comprises a first guide rod (18) and a second guide rod (20) parallel to a translation axis (22) of the linear guideway arrangement (10) and spaced apart from the first and second guide rods (18, 20) of the other one of the two pairs of guide rods in a first transverse direction perpendicular to the translation axis. The carriage (28) comprises a central part (30) and at least two legs (32) spaced apart from one another in the first transverse direction, each of the two legs (32) corresponding to one of the two pairs of guide rods (18, 20), each of the two legs (32) comprising at least one set (34) of first rollers comprising at least one first roller (34.1, 34.2) rolling on the first of guide rod (18) of the corresponding pair of guide rods (18, 20) and rotating about a first rotation axis (36.1, 36.2) fixed relative to the carriage (28) and perpendicular to the translation axis (22). Each of the two legs (32) is provided with at least one rolling shoe (40) comprising with at least one set (42) of second rollers comprising at least one second roller (42.1, 42.2) rolling on the second rod (20) of the corresponding pair of rods (18, 20) and rotating about a second rotation axis (44.1, 44.2) fixed relative to the rolling shoe (40) and perpendicular to the translation axis (22), the rolling shoe (40) of each of the two legs (32) being moveable with respect to the carriage (28) in a protruding direction perpendicular to the translation axis (22) towards the second guide rod (20) of the corresponding pair of guide rods (18, 20) between a retracted and a protruding positions. The arrangement is further provided with releasable fastening means (48) for releasably fastening the rolling shoe (40) of each of the two legs (32) relative to the carriage (28) in any intermediate position between the retracted and protruding positions.</p> |
