| 摘要 |
A device is proposed for assembling mechanical systems. These systems comprise an external casing (20) defining a cavity (22), for example a through hole, a central element (30) having at least one portion housed in said cavity (22) of said external casing (20) and a plurality of needle rollers (40), each of the needle rollers (40) housed between the external casing (20) and the portion of central element (30) housed in the cavity (22) of the external casing (20). The external casing and the central element are free to rotate with respect to each other. The device (1000) comprises truing means (200) adapted to arrange each needle roller (40) in such a way that each needle roller (40) has longitudinal axis parallel to a predefined axis (R) and that the needle rollers (40) are arranged in one or more groups (40a, 40b, 40c, 40d). Each group of rollers is arranged at a corresponding level along the predefined axis (R). The needle rollers (40) belonging to each group (40a, 40b, 40c, 40d) are arranged in a reciprocal position substantially corresponding to their final reciprocal position inside the mechanical systems (10) to be assembled. The device (1000) further comprises moving means (300) adapted to simultaneously move the groups (40a, 40b, 40c, 40d) of needle rollers (40) along a direction substantially parallel to the predefined axis (R), so as to position at least one of the groups of needle rollers (40) in a predefined position in which the group of needle rollers (40) is assembled with the external casing (20) and the central element (30) of the mechanical system (10). |
