An apparatus for surface finishing includes a robot and an end effector. The end effector includes a compliance wrist having an axis of movement and coupled to the robot and a grinder tool coupled to the compliance wrist. The robot is configured to controllably position the end effector in three-dimensional space. The compliance wrist is configured to bias the grinder tool to a biased position relative to the robot and enable the grinder tool to move relative to the robot in response to an external force acting upon the grinder tool.

An arm unit of a robot has a lower arm mechanism including a parallel link structure and an upper arm mechanism. The lower arm mechanism has a front link and a rear link including respective lower ends rotatably connected to the base portion. A lower arm drive mechanism has a lower ball screw and a lower bearing portion supporting a shaft so as to be rotatable about its axis. An extending portion extending from the lower end of the rear link is connected to a nut so as to be rotatable about a nut side rotational axis. The lower bearing portion is connected to a base portion so as to be rotatable about a bearing portion side rotational axis. Thus, high mechanical rigidity can be ensured over a wide operation range under a high load condition.

An automatically positionable joint for a modular tooling assembly includes a first joint member; a second joint member that is rotatably connected to the first joint member; a motor for causing rotation of the first joint member with respect to the second joint member; and a first clutch that is movable between an engaged position in which the first clutch restrains rotation of the first joint member with respect to the second joint member and a disengaged position in which the first clutch permits rotation of the first joint member with respect to the second joint member.

An exoskeleton includes a first link that pivots in a transverse plane about a first vertical axis and a second link that pivots in a transverse plane about a second vertical axis. The second link is coupled to the first link. An arm support assembly is coupled to the second link and pivots about a horizontal axis. The arm support assembly includes a spring that generates an assistive torque that counteracts gravity. The arm support assembly provides the assistive torque to an arm of a wearer to support the arm of the wearer. The arm support assembly further includes a cam profile and a cam follower. Contact between the spring, cam follower and cam profile determines an amount of the assistive force provided by the arm support assembly. A cuff is coupled to the arm support assembly and the arm of the wearer.

A control circuit for use with a robotic surgical system. The control circuit is configured to receive a parameter indicative of a rotary position of an articulation motor. The articulation motor is configured to drive an articulation joint of a robotic surgical tool, wherein the articulation motor is configured to move through a first range of positions and a second range of positions. The control circuit is further configured to implement a first operating state, and implement a second operating state when the parameter corresponds to a transition of the articulation motor from the first range of positions to the second range of positions. The control circuit is further configured to re-implement the first operating state when the parameter corresponds to a return of the articulation motor from the second range of positions into the first range of positions by a threshold anti-dither angle.

A robot includes elbows connecting forearms rotatably to upper arms with two rotational degrees of freedom. The elbow includes: an elbow joint connecting the forearm and the upper arm with two rotational degrees of freedom; an elbow drive main link; an elbow drive auxiliary link; a forearm-side main link attaching unit attached with one end of the elbow drive main link with two rotational degrees of freedom, and provided in the forearm; an elbow-drive-main-link-side auxiliary link attaching unit attached with one end of the elbow drive auxiliary link with two rotational degrees of freedom, and provided on the elbow drive main link; and two linear actuators for moving two upper-arm-side link attaching units each attached with the other end of either the elbow drive main link or the elbow drive auxiliary link with two rotational degrees of freedom, and provided so as to be movable along the upper arm.

In a parallel link mechanism, a distal end side link hub is coupled to a proximal end side link hub via three link mechanisms such that a posture of the distal end side link hub can be changed. Each link mechanism includes a proximal side end link member, a distal side end link member, and a center link member, and forms a quadric chain link mechanism composed of four revolute pairs. A singular point occurs when a central axis of the proximal or distal end side link hub and a central axis which is a rotation axis of a revolute pair section of the proximal or distal side end link member and the center link member coincide with each other. An axis angle of the center link member is specified such that a posture in which the singular point occurs is avoided.

A powered user interface for a robotic surgical system operates in accordance with a mode of operation in which the actuators are operated to permit motion of the handle in pitch and yaw motion constrained with respect to a virtual fulcrum in a work space of the user interface, and insertion motion is constrained along an axis passing through the virtual fulcrum. In a virtual fulcrum setting mode, a user is prompted to give input to the system selecting a desired point in space for the virtual fulcrum. The selected point in space is then set as the virtual fulcrum.

A locomotion subassembly for a biped robot is disclosed. The locomotion subassembly includes several unique energy transfer mechanisms and arrangements for efficiently powering the motion of the robot.

The present invention provides a transfer robot which has a simple structure and a small occupied area in an operation. A transfer robot of the present invention includes a support member fixed to a side wall or the like, a transfer arm by which a hand member is held capable of linear movement, and first and second link members. One end portions of the first and second link members are rotatably linked to the support member, respectively. Another end portions of the first and second link members are rotatably linked to the transfer arm, respectively. The hand member holds/transfers a work. A rotational driving force applied to a linking portion between the support member and the first link member is transmitted to the transfer arm by a predetermined mechanism and linearly moves the hand member. The transfer arm moves by rotating the first link member or the second link member.