A robot includes a support, a movable member coupled to the support to permit gimbal rotation about a pitch axis and a yaw axis, and first and second linear actuators connected to each of the support and the movable member and operable to rotate the movable member about the pitch axis and the yaw axis. The first linear actuator is pivotally attached to the movable member at a first pivot point. The second linear actuator is pivotally attached to the movable member at a second pivot point. The first and second pivot points are each angularly offset from the pitch axis and the yaw axis by about 45 degrees and are located on the same side of the pitch axis.

A robot includes a support, a movable member coupled to the support to permit gimbal rotation about a pitch axis and a yaw axis, and first and second linear actuators connected to each of the support and the movable member and operable to rotate the movable member about the pitch axis and the yaw axis. The first linear actuator is pivotally attached to the movable member at a first pivot point. The second linear actuator is pivotally attached to the movable member at a second pivot point. The first and second pivot points are each angularly offset from the pitch axis and the yaw axis by about 45 degrees and are located on the same side of the pitch axis.

The mechanism includes a threaded shaft extending along a longitudinal axis; a nut arranged coaxially with the threaded shaft; a plurality of rolling bearings interposed between the threaded shaft and the nut, each of the bearings comprising an outer race fixed to the nut, an inner race which is arranged coaxially with the outer race and is rotatable relative to the outer race about an axis of rotation, and a plurality of rolling members interposed between the outer race and the inner race; and a corresponding plurality of rings, each of which is fixed to the inner race of a respective bearing so as to rotate therewith about the same axis of rotation, and is interposed between the inner race of the bearing and the threaded shaft in such a manner that an inner surface of the ring is in contact with a screw thread of the threaded shaft.

The present disclosure relates to a screw drive with an element having a thread, at least one planet and a holder, wherein the at least one planet is held by the holder and rolls along the threads of the thread of the element and the holder moves linearly along the thread of the element relative to the element. The at least one planet of the screw drive is formed by a bearing which engages with its outer ring or with its inner ring in the thread of the element via an angular section.

The mechanism includes a threaded shaft extending along a longitudinal axis; a nut arranged coaxially with the threaded shaft; a plurality of rolling bearings interposed between the threaded shaft and the nut, each of the bearings comprising an outer race fixed to the nut, an inner race which is arranged coaxially with the outer race and is rotatable relative to the outer race about an axis of rotation, and a plurality of rolling members interposed between the outer race and the inner race; and a corresponding plurality of rings, each of which is fixed to the inner race of a respective bearing so as to rotate therewith about the same axis of rotation, and is interposed between the inner race of the bearing and the threaded shaft in such a manner that an inner surface of the ring is in contact with a screw thread of the threaded shaft.

A robot includes a support, a movable member coupled to the support to permit gimbal rotation about a pitch axis and a yaw axis, and first and second linear actuators connected to each of the support and the movable member and operable to rotate the movable member about the pitch axis and the yaw axis. The first linear actuator is pivotally attached to the movable member at a first pivot point. The second linear actuator is pivotally attached to the movable member at a second pivot point. The first and second pivot points are each angularly offset from the pitch axis and the yaw axis by about 45 degrees and are located on the same side of the pitch axis.