The present application discloses a cable-management system. The cables are divided into an outer group of cables and an inner group of cables. The system comprises a first cable guide, a second cable guide and at least four fixing members, wherein the first cable guide has a circular tube-shaped space, and the outer group of cables is partly accommodated between the first cable guide and the second cable guide; the second cable guide has a circular tube-shaped, and the inner group of cables is partly accommodated between the second cable guide and the first rotary shaft portion; and the fixing members respectively secure both ends of the outer group of cables or the inner group of cables on and along the first and second rotary shaft portions in a form in which the cables are arranged in parallel with each other, so that remaining portions of the outer group of cables or the inner group of cables are bent and suspended along the first and second rotary shaft portions in a U-shaped. The present application also discloses a rotary joint and a robot.

A robot including a manipulator having a plurality of joints and a base supporting the manipulator, includes a first piezoelectric motor and a second piezoelectric motor respectively having vibrators that transmit drive forces to a driven portion and performing rotary driving, wherein a distance between a rotation axis and the vibrator is smaller in the second piezoelectric motor than in the first piezoelectric motor, a plurality of the vibrators are placed along rotation axis directions in the second piezoelectric motor, and the second piezoelectric motor is placed closer to a distal end side opposite to the base than the first piezoelectric motor.

A lower part first main magnet, a lower part first sub-magnet, a lower part second main magnet, and a lower part second sub-magnet of a motor are sequentially repeatedly placed along a circumference of a rotation axis for relative rotation, a magnetization direction of the lower part first main magnet is a lower part first direction, a magnetization direction of the lower part second main magnet is a lower part second direction, magnetization directions of the lower part first sub-magnet and the lower part second sub-magnet are circumferential directions, the lower part first sub-magnet and the lower part second sub-magnet have recessed portions in parts facing a first stator and facing the lower part first main magnet or the lower part second main magnet, and lower part first auxiliary magnet to lower part fourth auxiliary magnet in magnetization directions different from the lower part first direction.

Robot arms and methods of controlling robot arms. In an example, a hand control is located on a robot arm and provides translation and/or rotation control of actuators that may for example rotate in unison. In another example, a hand control on a robot arm is also provided at an end effector, which may control actuators in the robot arm for example by having the actuators rotate together or oppositely in unison. In a further example, a hand control situated on a robot arm between actuators controls upstream and downstream actuators with different control strategies. In a master slave example, actuators in a master robot control actuators in a slave robot, and the actuators may be provided at an angle and be arranged to hold position in normal operation when unpowered. Nonbackdrivability is also provided by providing sufficient friction between stator and rotor in actuators of a robot arm. In a Scara robot, a fixed part of a base is secured to a floor, while a moving end is supported by a bearing element.

A system for positioning a patient before, during or after a medical procedure can include an arm assembly and a surgical drape for use with the arm assembly. The surgical drape can be configured to be placed around a surgical site where an operative procedure is to be conducted. The surgical drape includes a transparent viewing window, multiple handle covers, and an expandable opening on the top side of the surgical drape. Additionally, the surgical drape may also include adhesive components on the bottom side of the drape that may be independently removed in order to affix the drape around a surgical site.

A servo motor includes a housing, a rotor, a stator, a planetary reduction mechanism, a first Hall magnet, Hall switches, a second Hall magnet, and a position sensor; the rotor, stator, the planetary reduction mechanism, and the position senor are arranged in the housing. The rotor has a rotor support and a rotor shaft; the planetary reduction mechanism includes a sun gear, a planetary carrier, and planetary gears; a reduction ratio of the planetary reduction mechanism is N:1, where N is a positive integer; the first Hall magnet is arranged on the planetary carrier; the Hall switches correspond to the first Hall magnet and are arranged in the housing at even intervals around a rotation axis of the rotor shaft. The number of Hall switches is N; the second Hall magnet is arranged on the rotor; and the position sensor is opposite the second Hall magnet.

A servo motor and a robot. The servo motor includes: a housing, a rotor, a stator, a Hall magnet, and one printed circuit board. The rotor is arranged in the housing and has a rotor support and a rotor shaft; the stator is arranged in the housing; the Hall magnet is arranged on the rotor; the printed circuit board is arranged in the housing and provided with a position sensor facing the Hall magnet.

Provided is an actuator including: a motor; a brake; a motor casing that accommodates a constituent member of the motor; and a brake casing that accommodates a constituent member of the brake. The motor casing and the brake casing are connected to each other, the brake includes a stator having a coil and a coil case, and a friction plate, a minimum outer diameter of the coil case is 70 mm or less, and a value obtained by dividing a distance from a first end surface of the friction plate on a side farthest in an axial direction from the coil case to a second end surface of the coil case on a side opposite to the first end surface by the minimum outer diameter is 0.2 or less.

A drive train is provided comprising: a motor assembly, a gear box assembly (40) and an encoder assembly. The motor assembly comprises an electric motor (21) and a rotatable shaft (26) defining an input axis (27), the shaft (26) comprising a first set of gear teeth (28). The gear box assembly (40) comprises an annular gear (48, 50) comprising a second set of gear teeth (48, 50) which intermesh with the first set of gear teeth (28), and a housing (42, 44, 45) which comprises a fixed portion (42) to which the motor assembly is mounted and a rotatable portion (45) fixed to the annular gear (48, 50) and providing the output from the drive train about an output axis (72) offset from the input axis (27). The encoder assembly is arranged and configured to measure the rotation at the output axis (72). A central opening is defined through the gearbox assembly (40) in alignment with the output axis (72) and passing through the housing (42, 44, 45) and the annular gear (48, 50). The motor assembly is mounted so as to not obstruct the central opening. The encoder assembly comprises an annular first portion (71) mounted to the rotatable portion (45) of the gearbox assembly (40) about the central opening, and a second portion fixed with respect to the fixed portion (42) of a gearbox assembly housing (42, 44, 45) to measure the rotation of the annular first portion (71).

A robot driving device includes a base provided at a point spaced apart from a joint part of a robot, a driving part installed to be movable on the base, and for providing a driving force to the joint part, a wire connecting the driving part and the joint part to transfer the driving force of the driving part to the joint part, an adjustment part having an elastic part for elastically supporting the driving part with respect to the base, and allowing the driving part to move on the base in order to give tension to the wire, and a fixing part for fixing relative locations of the driving part to the base at a point at which the driving part has moved.