Fanuc Corporation

Takatoshi Iwayama

Toshihiko Inoue

Kazutaka Nakayama

Masahiro Morioka

Hiroaki Yamamoto

Ryo Nihei

Harutora Inaba

Junya Fujita

Masaru Oda

Yasuhiro Naitou

Hiroshi Nakagawa

Masaaki Uematsu

Shigeo Yoshida

Kentarou Ootani

Toru Shirahata

Jun Ibayashi

Tsuyoshi Hannya

A force sensor diagnostic device that diagnoses a force sensor provided in a robot, the force sensor disposed near an installation surface on which the robot is installed and detecting a force and a moment applied to the robot from an outside. The device includes a calculation unit that calculates a theoretical value of the force and a theoretical value of the moment detected by the force sensor, a determination unit that determines whether the force sensor is distorted by comparing an actually measured value of the force and an actually measured value of the moment detected by the force sensor with the theoretical values of the force and the moment, and a notification unit that notifies a determination result from the determination unit.

Force sensor diagnostic device and robot control device

Provided is a robot control device that can suppress the stoppage of operations due to the detection of a contact error. The robot control device controls a robot that implements welding in association with contact with a to-be-welded object, said device comprising: an action stoppage unit that stops the action of the robot if detected that the robot has been subjected to an external force equal to or greater than a threshold; an instructing unit that instructs a welding power supply device to start welding; and a detection sensitivity adjustment unit that lowers the sensitivity at which as external force is detected at the action stoppage unit during a period of time from the point in time at which the instructing unit instructs the welding power supply device to start welding until a prescribed wait time has elapsed.

Robot control device

A robot including: a robot body that includes an arm having a longitudinal axis, and at least one joint; and a proximity sensor unit that detects an object approaching the arm of the robot body. The proximity sensor unit includes: a support member that is fixed to the arm of the robot body and that is disposed, at such a position as to extend across the joint of the robot body, so as to be away from a surface of the arm in a direction perpendicular to the longitudinal axis of the arm; and a plurality of proximity sensors that are attached to the support member.

Robot

The present invention provides a robot system including: a movable human-collaborative robot including a human-collaborative robot, and a moving device that moves the human-collaborative robot mounted thereon; a control unit that controls the movable human-collaborative robot; and an approach sensor that detects approach of a human to the movable human-collaborative robot. The human-collaborative robot includes a human detection sensor that detects approach or contact of a human to or with the movable human-collaborative robot. When the approach sensor has detected the approach of a human, the control unit restricts the operation of at least the moving device and, when the human detection sensor has detected the approach of or contact with a human, the control unit performs control so as to stop the movable human-collaborative robot or so as to avoid the approach of or contact with the human.

Robot system

A robot control method includes, storing, in a memory, shape information about a robot including a tool attached to a tip and about a peripheral object located on a periphery of the robot. A teaching program also is stored in the memory. The teaching program includes a setting speed when operating the robot. By a processor connected to the memory, a distance between the robot and the peripheral object, based on the shape information, is calculated at each operation position when operating the robot according to the teaching program. By the processor, it is determined whether or not the calculated distance is changing in a decreasing direction. In response to determining that the calculated distance is changing in the decreasing direction, by the processor, the robot is operated at a speed lower than the setting speed in the teaching program.

Robot control method

An object is prevented from being sandwiched between robot arms without the occurrence of unintentional operating restrictions of the robot arms. Provided is a robot system including: a robot body that is provided with at least two links that are relatively moved by at least one joint; a sensor that detects the distances from mutually opposed surfaces of the at least two links to an object inserted between the surfaces; and a control unit that performs an interference avoidance operation if the distances detected by the sensor are less than a predetermined threshold.

Industrial robot

A system which can improve the reliability of an emergency stop operation of a robot when contacting a worker. The system is comprised of a force sensor and a malfunction judgment part. The force sensor has a detection part which detects the load in one direction. The detection part includes a first detection element and a second detection element. The malfunction judgment part judges if a first detection value which is detected by the first detection element and a second detection value which is detected by the second detection element differ from each other. If the first detection value and the second detection value differ from each other, it is judged that the first detection element or second detection element have malfunctioned.

System, robot and robot system for detecting load applied to robot

A human-cooperative industrial robot includes a contact force detection part configured to detect a contact force applied to the robot when an operator and a robot come in contact with each other, a contact force monitoring part configured to either stop the robot or make the robot retreat in a direction in which the contact force is reduced if the contact force exceeds a predetermined threshold value, and an operation force detection part configured to detect an operation force applied to the robot when the lead-through operation is implemented. The robot also includes a lead-through switch for switching between the states of enabling and disabling the lead-through operation. When the lead-through operation is enabled, the contact force monitoring is disabled, and when the lead-through operation is disabled, the contact force monitor is enabled.

Human-cooperative industrial robot with lead-through function

An arc welding robot having a welding wire conduit which has a bend radius above a certain level and arranged so that disadvantageous stress is not applied to the conduit by the motion of the robot arm. A conduit for a welding wire is inserted through a hole of a robot pedestal from the rear side of the robot, is supported by a second support member arranged on the pedestal, extends near the front side of a rotating body of the robot, and is supported by a first support member on the upper part of the rotating body while having a required minimum bend radius. The conduit after passing through the first support member is introduced to the rear side of the upper arm and is connected to a connector at the rear side of a wire feeder while having the required minimum radius, whereby the conduit presents a generally S-shape.

Arc welding robot

A workpiece transfer robot system including a machine tool provided with a workpiece support section and a robot capable of transferring a workpiece relative to the workpiece support section of the machine tool. The machine tool includes a cover surrounding at least the workpiece support section. The cover includes a first side wall provided with a first opening usable for a workpiece transferring task of the robot. The robot includes a track member defining a traveling axis extending in a direction perpendicular to the first side wall of the cover of the machine tool; a slider attached to the track member and capable of traveling along the traveling axis; a first arm attached to the slider and capable of swinging about a first swing axis; a second arm attached to the first arm and capable of swinging about a second swing axis parallel to the first swing axis; and a workpiece hold section provided on the second arm and capable of accessing the workpiece support section through the first opening of the cover of the machine tool.

Workpiece transfer robot system

A managing structure for an umbilical member includes a flexible conduit for leading an umbilical member inserted therein from a front arm of a robot to a working tool mounted on a wrist of the robot, a first conduit mounting portion provided adjacent to the front arm, and a second conduit mounting portion provided adjacent to a point where the umbilical member is connected to the working tool. One end of the conduit is attached to the first conduit mounting portion, while the other end of the conduit is attached to the second conduit mounting portion. The conduit is laid so that a section thereof between the first conduit mounting portion and the second conduit mounting portion does not contact the body of the robot.

Managing structure for umbilical member of industrial robot

An umbilical-member processing structure for an industrial robot which includes a forearm having a tool managing and relaying device and a wrist with proximal end rotatably connected to the forearm and having a work tool mounted on the distal end thereof, with an umbilical-member connected to the work tool being disposed to run along the wrist via the tool managing and relaying device: wherein the forearm has a first reduction gear which reduces the rotational speed of a driving source to drive the forearm in rotation; the first reduction gear having a first insertion hole for passing the umbilical-member therein; and wherein the wrist comprises a first wrist element having a through-path in communication with the first insertion hole and rotatably connected to the forearm, and a second wrist element having a second insertion hole in communication with the through-path and rotatably connected to the first wrist element.

Umbilical-member processing structure for industrial robot

An industrial robot has an arm, a wrist element rotatably interconnected to the arm, a work tool mounted on a distal end of the wrist element, and a motor mounted on the wrist element. An umbilical-member connected to the work tool and a flat cable connected to the motor are disposed to run along the wrist element from the arm side to the work tool or to the motor. A pipe member extending in a direction of a rotation axis of the wrist element is provided inside the arm and the umbilical-member connected to the work tool is passed inside the pipe member. The flat cable connected to the motor is wound around outside of the pipe member, with the flat cable arranged to become slack in a rotating direction of the wrist element.

Growing community of inventors

Yamanashi, Japan

Takatoshi Iwayama