Abstract: A machine tool and robot control apparatus, for use in a system having a machine tool, a numerical control device for controlling the machine tool, an industrial robot and a robot control device for controlling the industrial robot, has the numerical control device and the robot control device connected to each other by means of a data transfer line. Each of the numerical control device and the robot control device is provided with a circuit for transmitting and receiving data which are exchanged through the data transfer line. The robot command data for controlling the robot, as well as the machining data for controlling the machine tool, are stored in a non-volatile memory device provided only in the numerical control device, through the data transfer line and respective circuits for transmitting and receiving data.

Abstract: A control system for an industrial robot having a robot controlled in accordance with a position command signal and a position feedback signal and a control circuit for controlling the movement of said robot, said control circuit comprising an error register, a digital-analog converter, and a position gain multiplier between said error register and said digital-analog converter, wherein when the motor which drives said robot stops the rotation or when said motor gets ready to stop the rotation and an error value held in said error register becomes higher than a predetermined value, the multiplication factor of said position gain multiplier is increased, thereby a high accuracy of the positioning is accomplished.

Abstract: In order to attain a more suitable control of a robot unit which serves a machine tool in accordance with various conditions of the operations of the machine tool and the robot unit, the number of the kinds of signals produced in the machine tool is increased and a predetermined control of the robot unit is attained in response to each of the increased kinds of signals.

Abstract: An industrial robot having two rotative mechanisms that are adapted to rotate two arms relative to the axial directions thereof and which are interconnected such that their longitudinal axes intersect at right angles. An arm which belongs to the first rotative mechanism is secured to the base of the robot, and a gripping member is attached to the end of a free arm which belongs to the second rotative mechanism. This permits the gripping member to be moved in a plane which is parallel to the X-Z plane, and then in a plane which is parallel to the Y-Z plane, so that a workpiece or tool replacement can be moved along the perpendicular side walls of a machine tool frame.

Abstract: A numerical control system comprising a numerical control device, a machine tool for machining a workpiece under the control of the numerical control device, and a robot for executing various tasks such as mounting the workpiece on the machine tool or demounting the workpiece therefrom. The numerical control device, in addition to the hardware which it possesses for controlling the machine tool, is further provided with a teaching control panel, a heavy current circuit which handles the exchange of data between the numerical control device and the robot, and a switching control circuit for switching over the output side of a pulse distributing circuit so that the pulse distributing circuit can be used in controlling both the robot and the machine tool. Machining data for control of the machine tool and data for commanding the robot are stored in a memory device incorporated in the numerical control device, or in a storage medium which is located externally of the system.

Abstract: Teach data for directing the operation of an industrial robot is entered from a teach operating panel and set in a teaching memory. Machine work identify, insufficient machine work detect and other similar external data and data, such as the current and teach positions of the robot, are set in a work memory. A processor accomplishes write/read control of the teaching memory and the work memory and processing of the various data. In accordance with the result of processing by the processor, the robot is controlled and, in accordance with the contents of the external data, the teach data or the sequence by which the teach data controls is modified, thereby to efficiently operate the robot.

Abstract: An automated device comprising an arm, a wrist which is rotatably held by the arm at predetermined angles and a hand which is rotatably held by the wrist, wherein the wrist includes an apparatus for varying the angle of the axis of the wrist with respect to the axis of the arm, and the varying apparatus has a device for adjusting the angle. In the above device, the wrist may be bent in all directions.

Abstract: An industrial robot, having a robot hand mounted on a vertically movable body which is vertically moved by a vertical feed motor being provided with a load reducing means which includes a cylinder means for applying a constant upward force to the vertically movable body during the vertical movement of the body. The upward force contributes to reducing a load applied to the vertical feed motor.

Abstract: An automated device comprising an arm, a supporting case mounted on the end of the arm, a rotary actuator mounted on the end of the supporting case and a wrist with a hand rotatably held by the rotary actuator, wherein the rotary actuator has a replaceable stopper on the shaft thereof, and the supporting case has a pair of static members for setting the rotational range of the stopper. In the device, the rotary actuator stops rotating at two positions, i.e., the hand stops rotating at two positions.

Abstract: A single velocity unit is provided in the control unit of an industrial robot, which control unit has a plurality of motors for driving the arm of the industrial robot and a plurality of detectors for detecting the position of the arm. By the operation of the central processing unit, the digital output unit selects one of the axis position control units and one of the motors to be connected to the velocity unit, in accordance with an axis selecting instruction read out from the memory.