Figure 3.17 [left]. Ball-screw converter with floating nut. 1. screw; 2. nut; 3. support spherical washer; 4. master washer. 5-sphere Figure 3.18 (right]. Electrical connectors of the joint. 1. socket; 2. guide pin of the hull; 3. transverse displacement guides; 4. spring compensator for compression. In order to insure the working capacity of the converter when there are significant deformation of the screw, a “floating” nut was created (Figure 3.17). When the screw is bent radial and angular displacements of the nut relative to the casing with a toothed rim are possible. Actually in this structure the nut operates on the screw through the ball, and the casing is installed on a four-groove bail bearing. Radial displacement of the nut relative to the casing occur due to the gap between them, and angular displacements are made by the support planar-spherical washers. Axial loads are transmitted through the washers, and the torque between the nut and the casing are transmitted through the flat washer which has two grooves for the end protrusions of the nut, and two rounded protrusions which fit into the grooves of the casing.
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