Fujitsu Fanuc Limited

Fanuc Corporation

Fijutsu Fanuc Limited

Hajimu Inaba

Shinsuke Sakakibara

Shigemi Inagaki

Ryo Nihei

Hideo Miyashita

Susumu Ito

Nobutoshi Torii

Seiichiro Nakashima

Seiichiro Nakajima

Shoichi Otsuka

Mitsuo Hiraizumi

Yukio Ono

Atsushi Watanabe

Kengo Kobayashi

Masao Kita

Numerical control system

An industrial robot hand-holding device having a hand-holding unit attached to the extremity of the robot wrist, a hand-attaching unit having mounted thereon one of a plurality of diverse robot hands and being detachably attached to the hand-holding unit, and a safeguard unit provided between the extremity of the robot wrist and the hand-holding unit so as to safeguard the robot hand against an extraordinary force applied to or acting on the robot hand.

Industrial robot hand-holding device

A robot system for use with a machine tool having a spindle, comprising a robot having a body for being mounted on the machine tool, an arm pivotally mounted on the body and rotatable in a plane transverse to an axial direction of the spindle of the machine tool, and a hand mounted on a distal end of said arm for gripping a workpiece for transfer to the machine tool, and a workpiece feeder disposed adjacent to the robot and movably supporting a succession of pallets for carrying unmachined and machined workpieces thereon. The workpiece feeder includes a first mechanism for moving the pallets along a path on the workpiece feeder and for positioning the pallets one at a time in a position in which an unmachined workpiece can be picked up from the pallet by the hand or a machined workpiece can be unloaded from the hand onto the pallet, and a second mechanism for moving the pallet toward the hand in the position for allowing the and to pick up the unmachined workpiece and to unload the machined workpiece, and for moving the pallet away from the hand.

Robot system

Robot control system

A method and apparatus for controlling the acceleration of the frequency at the beginning of a pulse train and the frequency at the end of the pulse train, so that a movable element with little rigidity, such as a robot arm, can be started and stopped smoothly without vibration. The method includes storing frequency function in a memory, which frequency function represents an acceleration characteristic or a deceleration characteristic, reading the frequency function out of the memory at a predetermined interval, computing a frequency at the present time, and generating a number of pulses, corresponding to the product of the computed frequency and the predetermined time interval, during the predetermined time interval.

Method and apparatus for controlling the acceleration and deceleration

Industrial robot control method

Disclosed is a robot control system of the type in which instructive data taught by means of a teaching box is stored in memory and a manipulator such as a robot hand is actuated in accordance with the instructive data so that the robot is made to execute predetermined tasks. The manipulator is so driven by a servo motor as to reduce to zero a deviation between the number of command pulses generated on the basis of the instructive data and the number of feedback pulses generated in accordance with the current position of the manipulator. In accordance with a feature of the invention, the limit values of the deviation are stored in memory in advance and, when the deviation is found to lie outside the range of the limit values during the operation of the robot, such condition is interpreted as an overload and the operation of the robot is halted.

Robot control system for presetting limit values corresponding to limits

Industrial robot hand

A swivel device for supporting a swivel unit thereon, including a hollow main frame and a comparatively slender rotatable shaft disposed upright within the hollow frame, connectable to the swivel unit at the upper end thereof and connected to a driving source at the lower end thereof through a transmission mechanism. All control cables and conduits for controlling the mechanisms mounted on the swivel unit are accommodated in the space formed within the hollow frame around the upright shaft.

Swivel device

A robot wrist of an industrial robot having a wrist housing supporting two orthogonally arranged rotating output shafts therein, each of the shafts being connected to a robot hand, and a built-in fluid conveying means provided for distributing pressurized air introduced from the outside of the robot wrist toward the robot hand attached to one of the rotating cutput shafts. An output end of each of the two rotating output shafts may either be plugged by a plug element or closed by a stop valve when the output end is not connected to the robot hand.

Robot wrist of an industrial robot

Device for operating a hand of an industrial robot

Method and apparatus for controlling industrial robots

Growing community of inventors

Hino, Japan

Hajimu Inaba