| 摘要 |
<p>A device (1) for moving and positioning a member in space, comprising: a mobile member (2); a first member (3), solidly constrained to a frame (32) of the device (1) and a second member (4) solidly constrained to the frame (32) of the device (1); a first carriage (5) slidable along the first member (3); a second carriage (6) slidable along the second member (4); a first pair of arms (7, 8) comprising a first arm (7) and a second arm (8), the first arm (7) and the second arm (8) being hinged, at an end thereof, to the first carriage (5) and, at another end thereof, to the mobile member (2), the first pair of arms (7, 8), the first carriage (5) and the mobile member (2) identifying a first four-bar linkage (9); a second pair of arms (10, 11) comprising a third arm (10) and a fourth arm (11), the third arm (10) and the fourth arm (11) being hinged, at an end thereof, to the second carriage (6) and, at another end thereof, to the mobile member (2), the second pair of arms (10, 11), the second carriage (6) and the mobile member (2) identifying a second four-bar linkage (12); a third member (13); a third pair of arms (14, 15) comprising a fifth arm (14) and a sixth arm (15), the fifth arm (14) and the sixth arm (15) being hinged, at an end thereof, to the third member (13) and, at another end thereof, to the mobile member (2), the third pair of arms (14, 15), the third member (13) and the mobile member (2) identifying a third four-bar linkage (16); a fourth member (17) which is hinged to the frame (3, 4, 19, 32) of the device (1) and which rotatably bears the third member (13); a first actuator (18) for moving the fourth member (17).</p> |
