| Patent Number |
Title Of Patent |
Date Issued |
| 5565854 |
MMC unit |
October 15, 1996 |
| A man machine controller (MMC) unit is connected to a computer numerical control apparatus and controls a servoamplifier or a machine such as a machine tool, a robot, or a plastic mold injection machine. The MMC permits easy upgrading, changing, and the like of display functions. The |
| 5563378 |
Cable clamp for motor |
October 8, 1996 |
| A cable clamp for clamping a motor cable includes a fixing member having a pair of bottom plates. The bottom plates are placed in parallel to each other to thereby define an opening. A pair of guide members are also placed in parallel to each other and bridge the bottom plates to further |
| 5561742 |
Multiple-robot control and interference prevention method |
October 1, 1996 |
| A multiple robot control method in which a spatial region is defined for each of a plurality of robots. The spatial region is defined according to a region which a robot occupies and the spatial region depends on a position and orientation of each robot. The robots are mounted close to |
| 5558196 |
Device for detecting limits of rotational motion in a robot |
September 24, 1996 |
| A device for detecting the limits of the rotational motion of a rotating member in an industrial robot is provided. The rotating member rotates in a first and a second rotational direction about an axis relative to a fixed member. The device comprises a limit switch provided on one of th |
| 5552687 |
Emergency robot shutdown circuit |
September 3, 1996 |
| An emergency robot shutdown circuit reliably stops a movable component of a robot which has suffered an overtravel condition. The emergency robot shutdown circuit has three relays, and detects an overtravel condition of the robot with a dog located in a limit position of a normal operati |
| 5551857 |
Cylinder temperature controller for an injection molding machine |
September 3, 1996 |
| A cylinder temperature controller for an injection molding machine in which an injection molding operation is performed while keeping the injection cylinder at a stable preset temperature regardless of disturbances such as the change of mold temperature or ambient temperature and the tem |
| 5549018 |
Small-locus machining apparatus |
August 27, 1996 |
| A small-locus machining apparatus is attached to the distal end of a wrist of a robot but operable independently of a robot body. First and second drives of the apparatus are mounted on a base in such a manner that respective output spindles are parallel with each other. First and second |
| 5543700 |
Driver circuit and a driving method for a variable-reluctance motor |
August 6, 1996 |
| A variable-reluctance motor is driven by means of a driver circuit which is composed of a common switching device and switching devices corresponding to individual phases. The sum (total current i.sub.t) of currents flowing through coils for the individual phases is detected. The duty ra |
| 5539972 |
Method of screwing a pipe to an object |
July 30, 1996 |
| Disclosed is a method of screwing a pipe having threads with a different pitch on the outside and inside thereof into an object and assembling the same thereto by using a CNC machine tool. A male thread provided to a spindle is moved to an initial point I and point R by a quick traverse |
| 5539180 |
Method of laser beam welding galvanized steel sheets with an auxiliary gas containing oxygen |
July 23, 1996 |
| Oxygen is mixed with another gas to form an auxiliary gas that will permit a welding of zinc-plated steel sheets (3a and 3b) without producing blowholes. An oxygen (O.sub.2) gas cylinder (4a) is provided in addition to an argon (Ar) gas cylinder (4b), for forming the mixed auxiliary gas, |
| 5538369 |
Machine tool with tapping function |
July 23, 1996 |
| In a machine tool equipped with a numerical control unit for digitally controlling a spindle motor, the number of revolutions and feed speed of a spindle for rigid tapping are obtained by designating the number of revolutions and the tapping pitch from an input device and calculating the |
| 5538067 |
Method and device of producing a squirrel-cage rotor for an induction motor |
July 23, 1996 |
| A holding member (22) which can hold a predetermined axial-length laminated core member by pressing down both axial end faces thereof is used to hold a short laminated core member (24) and a spacing element (48) having a thickness generally equal to the difference between the axial lengt |
| 5536159 |
Injection molding machine |
July 16, 1996 |
| An injection molding machine in which injection units are arranged at any selected surface of a mold to perform an injection molding operation. The machine comprises a main injection unit, which has a main NC unit for controlling servomotors for thrusting and rotating a screw and moving |
| 5532924 |
Attitude control method of a visual sensor utilized for an industrial robot |
July 2, 1996 |
| An attitude control method of a visual sensor (3) utilized for a robot (1), with the object of simplifying the teaching operation for adjusting the attitude of the visual sensor, enabling continual control of sensor attitude, and obtaining highly reliable measuring accuracy of the sensor |
| 5528013 |
Method of automatically adjusting welding conditions for an arc welding robot |
June 18, 1996 |
| A method, such that, using known data, a relationship between a target welding current and a welding current command to be instructed to a welding machine to achieve the target welding current is estimated by a linear formula. Then, a welding current command corresponding to a welding |
| 5525776 |
Compound machine tool |
June 11, 1996 |
| A compound machine tool has a base 10 with a spindle head 16 for machining mounted thereupon, on column 12. Condenser head 18 is mounted on base 10 through second column 14, for laser beam processing. A rotatable workpiece fitting table 20 is also mounted on column 14. Spindle head 16 sh |
| 5520062 |
Window mechanism for sensor in industrial robot |
May 28, 1996 |
| A window mechanism for a sensor provided at the distal end of a robot arm of an industrial robot comprises a housing for enclosing the sensor which housing includes an opening, a glass plate for closing the opening, wiper for wiping the outer surface of the glass plate, a holder plate fo |
| 5519297 |
Spindle positioning method |
May 21, 1996 |
| A spindle positioning method for high-speed positioning of a spindle by making the best use of the decelerating capability of a spindle motor. When a fixed-position stop command is generated while the operation of the spindle motor is controlled according to speed control, the motor rota |
| 5514941 |
Numerical control device for predicting a machining termination time |
May 7, 1996 |
| A reference machining speed and an offset value for each machining cycle are specified with reference to a machining condition table of a nonvolatile memory in accordance with a set workpiece material, workpiece thickness, wire electrode diameter, and machining frequency. An overall |
| 5511007 |
Diagnostic method for a real time sensor mounted on a robot |
April 23, 1996 |
| A diagnostic method in which data obtained from a real-time sensor are stored during the operation of a robot for later diagnosis of the operation state of the sensor. This method includes the steps of scanning an object by using a laser sensor, thereby obtaining sectional data; dete |
| 5508686 |
Overtravel detecting device for an industrial robot |
April 16, 1996 |
| An overtravel detecting device, mounted on an angularly movable shaft of an industrial robot for mechanically determining and detecting the limits of rotation of the movable shaft, is attached to a rotating shaft (12) of a wrist portion (10) of an industrial robot and is provided with a |
| 5505606 |
Nozzle hole sealing device for injection nozzle |
April 9, 1996 |
| A nozzle hole sealing device for an injection nozzle capable of blocking a hole at the tip of a nozzle by using a robot in purging an injection molding machine. The nozzle hole sealing device includes a tool changer for connecting the nozzle hole sealing device to a wrist of the robot an |
| 5504766 |
Controller for laser beam oscillator |
April 2, 1996 |
| A controller for a laser beam oscillator capable of notifying an operator of a proper timing at which a discharge tube, oscillation lamp and the like must be replaced. When a part of the laser beam oscillator is replaced, a processor calculates the integrated operating time value and |
| 5504294 |
Method for controlling a wire-cut electric discharge machine |
April 2, 1996 |
| A method of controlling a wire-cut electric discharge machine to improve machining accuracy in a machining operation for a corner portion of a workpiece to be machined. In a case where the portion to be machined includes a corner, a pressure and/or an amount of machining fluid supplied |
| 5499963 |
Automatic tool changer |
March 19, 1996 |
| An automatic tool changer for a machine tool comprises a first cam (C.sub.S) for swinging a turret (38) by cooperation with a first cam roller (21) mounted on a back face of the turret (38); a second cam (C.sub.L) for raising and lowering the turret (38) with respect to the spindle h |
| 5493193 |
Numerical control apparatus and numerical control method |
February 20, 1996 |
| A numerical control apparatus for controlling a machine tool to simply and accurately cyclically machine a workpiece. When the operator enters graphic data such as circular or rectangular graphic data in an interactive fashion from a keyboard or the like according to guidance informa |
| 5493192 |
Abnormal load detection method |
February 20, 1996 |
| A method for accurately detecting an abnormal load caused, e.g., by adhesion of the distal end of a spot gun. A flag F2 is set to "1" when a move command is outputted to move a movable part of a machine and is reset to "0" upon lapse of a predetermined very short period of time, and, whi |
| 5491392 |
Power source regenerative apparatus |
February 13, 1996 |
| The present invention relates to a power source regenerative apparatus which prevents distortion of a voltage regenerating in the power source from being caused. An inverter transforms induction electromotive force caused in regenerating the power source, namely in decelerating the motor |
| 5489758 |
Height-sensing device for a laser robot |
February 6, 1996 |
| A laser robot having a height sensing device (13) arranged at a position very close to a laser-beam projecting machining head (9) so that the axis of the height-sensing device (13) is parallel to the longitudinal axis of the machining head (9), the three-dimensional distance data represe |
| 5487628 |
Device for preventing cutting fluid from entering a bearing on a spindle in a machine tool |
January 30, 1996 |
| A machine tool comprises a spindle head (2) having a vertical bore (2a); a spindle (20) provided in said vertical bore (2a) and including a tapered hole (24) at the lower end of said spindle (20); bearing means (22a) provided in said vertical bore (2a) for rotatably supporting said spind |
| 5486765 |
Insulating condition detecting apparatus for a wire-cut electrical discharge machine |
January 23, 1996 |
| An insulating condition detecting apparatus for a wire-cut electrical discharge machine in which insulation between a wire electrode and a workpiece is detected without rising any other special power source than a power source for machining. A voltage between the wire electrode (6) and |
| 5486679 |
Arc welding control method for a welding robot |
January 23, 1996 |
| An arc welding control method for a welding robot wherein a welding current and a welding voltage are controlled at the start of arc welding so as to prevent the formation of a molten metal pool. When arc start is instructed, a welding command voltage E and a welding command current I |
| 5485552 |
Method of creating a robot motion program |
January 16, 1996 |
| A method of teaching a robot motion program, which facilitates the preparation of programs, and in which a required one of a plurality standard motion programs for operating a robot in accordance with stereotyped motion patterns is read from a memory of a robot control device and dis |
| 5485389 |
Manual feeding method for robots |
January 16, 1996 |
| A method of manually feeding robots to ensure an efficient and safe teaching operation for each robot, even when the multiplicity of robots are arranged close to each other. As long as a controller B receives a manual feed command, coordinates representing current positions of feature |
| 5485069 |
Numerical control apparatus |
January 16, 1996 |
| A numerical control apparatus which reduces a cycle time by executing the movement command of a next block without temporarily stopping the movement of a workpiece even if a skip signal is input. Upon receiving the skip signal SS output from a sensing device, a skip signal sensing device |
| 5484982 |
Beam axis adjusting method for a laser robot |
January 16, 1996 |
| A beam axis adjusting method of a laser robot including the steps of splitting a visible laser beam traveling along a laser beam pathway within the robot unit of the laser robot into a first laser beam traveling further along the laser beam pathway and a second laser beam traveling o |
| 5483460 |
Numerically controlled machine tool having switch matrices with a reduced numbers of signal line |
January 9, 1996 |
| A numerically controlled machine tool which requires fewer signal lines between a machine control console and a numerical control unit. Switch matrixes (1, 2, . . . n) have matrix elements (S111, S112, . . . ) disposed thereto in a matrix shape. Common signals (COM1, COM2, . . . COMj |
| 5482586 |
Method of manufacturing multilayer printed wiring board |
January 9, 1996 |
| Two aluminum-copper foils, each composed of a layer of copper and a layer of aluminum, are held back to back with the aluminum surfaces against each other, thereby providing an outer layer material (20) for a multilayer printing wiring board. To manufacture a multilayer printed wiring bo |
| 5479353 |
System for correcting tool deformation amount |
December 26, 1995 |
| A system for correcting a tool deformation amount by which the amount of deformation of a tool is corrected for machining. A preprocessing arithmetic operation means reads a machining program and supplies machining conditions such as a cutting speed and the like necessary for the cal |
| 5479078 |
Position teaching method for a robot |
December 26, 1995 |
| A robot teaching position method for easily modifying an original position of one of a plurality of taught points arranged on a straight line to a modified position moved a distance along the straight line from the original position. An operator selects one of the plurality of taught |
| 5477119 |
Tracing control system |
December 19, 1995 |
| A tracing control system for tracing a groove counter can easily measure the groove contour formed on a three-dimensional model surface. A tracer head is provided with a stylus having a size enabling the stylus to slide in a groove formed on the model surface in the state that the stylus |
| 5475602 |
Acceleration constant switching apparatus |
December 12, 1995 |
| A computerized numerical control apparatus for switching an acceleration constant for acceleration/deceleration prior to interpolation in accordance with the kind of an axis, in which an acceleration/deceleration prior to interpolation unit subjects a feed speed to an acceleration/de |
| 5471394 |
Method for defining machining areas of a workpiece |
November 28, 1995 |
| A method for defining machining areas of a workpiece by means of a CRT screen display in an interactive system for creating a program for NC machining includes the steps of providing a first display of a workpiece before machining including a designated area to be machined, providing a |
| 5471312 |
Automatic calibration method |
November 28, 1995 |
| A method for automatically effecting calibration between an image processing apparatus and a control device of an automatic machine. Jig data for calibration and the position of a robot, fitted with a jig which can be photographed by a camera at the time of calibration, are previously |
| 5471126 |
Slip frequency control method for induction motors |
November 28, 1995 |
| A slip frequency control method for induction motors, capable of achieving accurate control and excellent in control response.To effect determination of a slip frequency (fs) and an excitation magnetic flux frequency (.omega.0) by software processing to reduce a control error and a contr |
| 5469352 |
Operation history display device of numerical control apparatus |
November 21, 1995 |
| An operation history display device of a numerical control apparatus by which a fault causing factor can be easily specified. Key input means outputs the key signal of an operation key depressed by an operator to input a command to the numerical control apparatus. Change detection means |
| 5467521 |
Method of producing squirrel-cage rotor for induction motor |
November 21, 1995 |
| A method of producing a squirrel-cage rotor for an induction motor, which includes a plurality of secondary conductors arranged respectively in through holes (16) of a laminated core (14), and a pair of end rings connecting the secondary conductors with one another at both axial ends of |
| 5467445 |
Cross sectional configuration creating apparatus in the creation of free curve |
November 14, 1995 |
| A cross sectional configuration creating apparatus to create a free curve by which a cross sectional configuration can be easily defined. An operator creates a cross sectional configuration (DC) on a predetermined plane coordinate system by using a cross sectional configuration creation |
| 5467001 |
Control method for an alternating current motor |
November 14, 1995 |
| A control method for an alternating current motor, wherein after a torque command Tcmd1 is obtained, if the motor is accelerating, and the obtained torque command Tcmd1 is found to not exceed a predetermined limit value K.sub.0, the torque command Tcmd1 is directly outputted as a torque |
| 5466909 |
Laser robot with approach time from origin to a starting position minimized |
November 14, 1995 |
| In carrying out precision laser-beam machining by using a laser-beam machining head driven by an additional motion-axis means 8 of a laser robot unit 1, a CPU accommodated in a robot controller 10 calculates time A+B necessary for a laser beam projecting nozzle to travel a distance b |
