| Patent Number |
Title Of Patent |
Date Issued |
| 5939810 |
Rotor for synchronous motor |
August 17, 1999 |
| A rotor (10) includes a plurality of permanent magnets (14) disposed around a shaft (12) at generally equal intervals, and a plurality of laminated core members (16) disposed between the permanent magnets (14) so as to form magnetic poles. The laminated core members (16) are formed by |
| 5937930 |
Method for casting conductor of a cage rotor of an induction motor and apparatus for casting the |
August 17, 1999 |
| The invention relates to an apparatus for casting a conductor of a cage rotor of an induction motor. A rotor core (13) comprising a laminated steel sheets is housed in a recess portion of a casting mold, an upper end portion thereof is held by a holding portion (70) and molten metal is |
| 5937143 |
Teaching pendant for a robot |
August 10, 1999 |
| The invention is a robot teaching pendant containing a display device with graphic display capabilities. Display data is displayed on the graphic display and includes the movement of a robot and taught points. This display data is generated by a display data generation unit based on robo |
| 5936864 |
Free curve interpolation apparatus and interpolation method |
August 10, 1999 |
| A moving path for which an interpolation instruction is given is a free curve expressed by a vector P(k). This curve is divided at predetermined cycles, and tangential vectors P' (k.sub.1) and P' (k.sub.2) at the start point and end point of each divided block are calculated. From these |
| 5936369 |
Method of estimating disturbance load on servomotor |
August 10, 1999 |
| A disturbance load estimation method for a servomotor in which an disturbance load externally exerted on the servomotor can be accurately estimated even when the voltage is saturated. Actual values (Ir, Is, It) of three-phase alternating current determined by current loop processing |
| 5935457 |
Machining fluid processing apparatus for electric discharge machine |
August 10, 1999 |
| A machining fluid processing apparatus for an electric discharge machine capable of easily exchanging a filter for a new one. A filter is horizontally supported on a support table in a tray which is provided over a machining fluid tank. The contaminated machining fluid is supplied from |
| 5931070 |
Punch press system and its control method |
August 3, 1999 |
| A table for fixing a workpiece is driven and controlled by a position control means in a CNC unit through servo motors. Approach of a press tool to the workpiece is started by a press operation control means in the CNC unit through a servo motor at the time prior to the time, at which th |
| 5920678 |
Robot teaching method |
July 6, 1999 |
| While jog feeding, if the robot can be moved safely without interference or collision with others, the data on jog feeding path is accumulated in an external memory device. And a safe region in which the robot can move without interference or collision can make from some accumulated path |
| 5914054 |
Electrical discharge machine with a handling robot |
June 22, 1999 |
| A handling robot (13) for holding a part or a core by electrical discharge machining, and for taking a part or a core out of an electrical discharge machine is attached integrally to a front-side panel (11) of a submerged tank (9) of the machine. Thus, the handling robot (13) need not be |
| 5912540 |
Robot control system which enables safe robot operation and simple recovery when undesired movem |
June 15, 1999 |
| The robot control system of the present invention stores the robot's initial state data memory prior to engaging in an operation. During a manual movement operation, the robot is started at a predetermined low speed so that the operator may easily observe its movement and take correc |
| 5911125 |
CNC acceleration-deceleration control apparatus and method |
June 8, 1999 |
| Program storage means (1) is stored with a command program (1a) for driving and controlling a servomotor (4) that drives a belt conveyor (2). Acceleration-deceleration control means (7) detects the current position and current speed of the servomotor (4), and referring to the result of |
| 5910261 |
Laser machining device and laser machining method of a round hole |
June 8, 1999 |
| In a laser machining device for cutting a round hole in a workpiece employing a machining program, a movement path includes a section from point P.sub.1 to point P.sub.2 (passing a hole previously formed in a workpiece) and reaches point P.sub.3 on a circle (40) to be cut. A section |
| 5906777 |
Injection molding control method for an injection molding machine |
May 25, 1999 |
| Clamping and injection operations are executed partially in parallel by adjusting a clamping speed and an injection start timing T so that sum .SIGMA.P of resin pressure acting on the parting plane of a mold cavity will not exceed mold clamping force F outputted at that time. An injectio |
| 5900171 |
Laser machining apparatus with head support by angularly movable expandable arms |
May 4, 1999 |
| A laser machining apparatus capable of performing a high-speed and high-precision machining of a workpiece. One end of each of a first-axis and a second-axis expandable arms is supported on a fulcrum. The fulcrum is angularly movably within a predetermined range about the fulcrum in a |
| 5894653 |
Method of machining motor frame body and motor machined by the method |
April 20, 1999 |
| A stator (76), a rotor (82), and frame bodies (84, 86) to fixedly hold a stator core (74) therebetween in an axial direction are assembled into a motor. Further, a shaft (78) of the rotor and the frame body (86) are mutually coupled through a coupler (106) with no ability for relative |
| 5893987 |
Laser output control system |
April 13, 1999 |
| A laser output control system responsive to a command signal from a CNC, which is capable of sharply reducing time required for transfer of waveform data from the CNC in executing laser-beam machining. An output control device, upon receiving the command signal from the CNC, reads re |
| 5892680 |
Method of correcting positional displacement of machining point |
April 6, 1999 |
| There are determined by measurements: the maximum -A of the positional displacement, which is caused by a deflection when a machining point is moved in a +X direction; and a movement command D in effect until the machining point is reversed to a -X direction while the maximum deflection |
| 5889346 |
Rotor for synchronous motor |
March 30, 1999 |
| A rotor (10) includes a plurality of permanent magnets (14) disposed around a shaft (12) at generally equal intervals, and a plurality of laminated core members (16) disposed between the permanent magnets (14) so as to form magnetic poles. The laminated core members (16) are formed by |
| 5888037 |
Method of and apparatus for moving feed shafts of numerical controlled machine tool |
March 30, 1999 |
| A feed-shaft moving method and an apparatus capable of reducing non-cutting motion time. In a first section and a second section, an immediately preceding path is connected with a rapid traverse by a rapid traverse motion path having a curve continuous with the immediately preceding path |
| 5887643 |
Conductor casting apparatus for a squirrel-cage rotor of an induction motor |
March 30, 1999 |
| A rotor core (12) of a squirrel-cage rotor of an induction motor is housed in a recess (14) of a mold (18) of a conductor casting apparatus (10). A composite cylinder device (68) is fixed on the upper side of the mold (18) or on the side remoter from the pouring gate thereof, and the rot |
| 5887122 |
Tracking control method for robot with weaving action |
March 23, 1999 |
| A method of controlling a robot to perform a weaving action and a tracking action using a non-contact sensor. When a weaving start command with a condition of a cycle Tw is issued, a laser sensor starts scanning in a cycle Tw/2n in synchronism with the start of weaving action, and output |
| 5886441 |
Rotor for synchronous motor |
March 23, 1999 |
| A rotor (10) includes a plurality of permanent magnets (14) disposed around a shaft (12) at generally equal intervals, and a plurality of laminated core members (16) disposed between the permanent magnets (14) so as to form magnetic poles. The laminated core members (16) are formed by |
| 5878067 |
Laser oscillator |
March 2, 1999 |
| A laser oscillator which is capable of preventing damage caused by light reflected from a workpiece and a decrease in productivity resulting therefrom. Between a rear mirror and an output mirror within the laser oscillator is arranged a bending mirror. The bending mirror has a coating |
| 5877603 |
Electric current control method for a servomotor |
March 2, 1999 |
| An electric current control method for a servomotor in which a reactive current is lowered in a region where a voltage saturation does not occur, to suppress generation of heat caused by the reactive current and achieve a stable rotation up to a high-speed region. In the current control |
| 5872894 |
Robot control apparatus and method eliminating any influence of motion in a preceding path and a |
February 16, 1999 |
| A robot control method capable of eliminating any influence of motion in a preceding path section to assure an accurate path movement with respect to a portion of a path section toward an end point. In a motion statement, a path-assurance section is previously designated in terms of leng |
| 5859401 |
Wire electric discharge machining method |
January 12, 1999 |
| A wire electric discharge machining method capable of performing a first machining and also a second cut-off machining based on a single machining program. A program for defining machining paths for cutting off individual male forms A1-A3 is inputted and a reserve amount .alpha. and a ba |
| 5856992 |
Gas laser blower |
January 5, 1999 |
| In a blower for compulsorily circulating a laser gas for a gas laser apparatus, a shaft (2) of an impeller (1) is fitted with an intermediate member (66) that rotates together therewith, and rings (641, 642) are fitted individually in annular grooves (651, 652) formed on the intermed |
| 5856649 |
Laser beam machine |
January 5, 1999 |
| A laser beam machine capable of easily generating a machining path for cutting. A reading device reads a designation code for the shape of a hole to be cut, a size of the hole, a central position of the hole, and a start position and a final stop position of a front end point of a machin |
| 5852276 |
Laser machining resuming method |
December 22, 1998 |
| A laser machining resuming method in which the laser machining can be securely resumed without leaving an un-machined portion when machining is interrupted while laser machining is being carried out. When laser machining is performed a distance of L.sub.0 from a machining point (P1) |
| 5845053 |
Method for teaching welding torch orientation |
December 1, 1998 |
| First, an operator sequentially teaches the start point A, the end point F and junction points B, C, D, E on the welding path by moving the torch head by jog feed without paying attention to the torch orientation. Next, a reference plane to define the orientation of the torch is specifie |
| 5843496 |
Mold clamping mechanism of an injection molding machine |
December 1, 1998 |
| In a mold clamping apparatus of an injection molding machine using five-point double toggles, a projection (17) is formed at a side of a link (14) of which one end is connected to a rear platen (6), that side being opposite to the side facing a crosshead (18). And a pin is inserted in a |
| 5841257 |
Circuit for supplying/interrupting power to robots |
November 24, 1998 |
| A circuit for supplying/interrupting power to robots in a robot control system which controls two robots by use of one controller. This circuit for supplying/interrupting power to robots includes a common power interrupting circuit, which simultaneously interrupts power supplies to t |
| 5834715 |
Keyboard |
November 10, 1998 |
| A key base plate mounting a membrane sheet with a contact thereon is fixed to a keyboard substrate through a screw. A peripheral edge portion of the key base plate fixed to the keyboard substrate is opposed to a packing fixed to the keyboard substrate. An upper surface of the membrane sh |
| 5829120 |
Method for manufacturing a rotor for synchronous motor |
November 3, 1998 |
| A rotor (10) includes a plurality of permanent magnets (14) disposed around a shaft (12) at generally equal intervals, and a plurality of laminated core members (16) disposed between the permanent magnets (14) so as to form magnetic poles. The laminated core members (16) are formed by |
| 5822212 |
Machining load monitoring system |
October 13, 1998 |
| A machining load monitoring system to monitor a machining condition by comparing sampled data of a machining load in a trial cutting process and measured data thereof in an actual cutting process with each other precisely with respect to time. An NC command executing unit (1) executes |
| 5818009 |
Laser beam machining system |
October 6, 1998 |
| A laser beam machining system is provided whereby a distribution of flow velocity of an assist gas suited for high-speed cutting is obtained. A nozzle has a nozzle hole for emitting the laser beam and the assist gas therethrough. A helical groove is formed in the inner surface of the |
| 5817258 |
Method of injection control for injection molding machine |
October 6, 1998 |
| Over the whole range of the injection process, standard injection speeds and pressures are set and sections for injection speed control and sections for pressure control are set according to the length of time t, screw position S, or injection pressure P, each after the start of inje |
| 5815401 |
Free-form curve interpolation method and apparatus |
September 29, 1998 |
| A free-form curve interpolation method and device is provided for smoothly interconnecting curves using a non-uniform rational B-spline (NURBS) curve representation. This ability to interconnect free-form curves is important when machine parts of small dimensions or complex configuration |
| 5815399 |
Multi-path synchronization system for CNC controller |
September 29, 1998 |
| A single control unit in a multi-path synchronization system for a CNC controller simultaneously controls a plurality of paths. A program storage unit stores NC programs corresponding to respective paths. Those NC programs contains synchronization command codes which specify conditions |
| 5815397 |
Method of analyzing factors affecting product quality and adjusting molding conditions for injec |
September 29, 1998 |
| A method of analyzing factors affecting the product quality performs adjustment of molding conditions for an injection molding machine. Data effective to discriminate the product quality is properly selected, and molding conditions for eliminating a molding abnormality are easily det |
| 5814956 |
Method and apparatus for control in power failure |
September 29, 1998 |
| A method and apparatus for controlling a machine in a power failure. The present invention is applicable to such machines that a tool and a workpiece must always be controlled in synchronization with each other, and allows the tool and workpiece to stop without any damage in the power |
| 5814954 |
Method of and an apparatus for protecting a regenerative resistor in an inverter for driving a s |
September 29, 1998 |
| A protecting method and apparatus for a regenerative resistor in which a regenerative resistor is satisfactorily protected from a thermal breakage caused by an over-regeneration by combining a projection of the regenerative resistor by a thermostat and a protection of the regenerative |
| 5812408 |
Control unit and control method for robot used for arc welding |
September 22, 1998 |
| A welding voltage value Vf and a welding current value If are respectively monitored by a detector during execution of arc welding in accordance with a robot operation program, indexes are calculated which show how far the monitored values Vf and If are deviated from a command welding vo |
| 5808434 |
Numerical control apparatus |
September 15, 1998 |
| A numerical control apparatus having command input panels including the number of command keys corresponding to an application program. An application execution unit receives and stores command data output from a machine control console as well as executes an application program gene |
| 5804224 |
Driving apparatus for electrically-operated injection molding machine |
September 8, 1998 |
| A driving apparatus for an electrically-operated injection molding machine not requiring any bearing nor any connector. An electric motor having a rotor shaft on which a ball screw is integrally formed is mounted on one of a cross-head and a rear platen of a clamping mechanism, while a b |
| 5800748 |
Pressure data display method for an injection molding machine |
September 1, 1998 |
| A reference pressure waveform for injection molding operation is set in advance; pressures corresponding to the pressure waveform are detected with predetermined detection times during the injection molding operation; pressure deviations between pressure stored in the pressure waveform, |
| 5799135 |
Robot controlling method and apparatus using laser sensor |
August 25, 1998 |
| A robot controlling method and apparatus using a laser sensor in which an optimum moving path is realized even if the accuracy of positioning workpieces is low. While a laser sensor is operated, a robot is started to move toward a taught position corresponding to the start position of a |
| 5796229 |
Method and apparatus for robotic force controlled material removal with programmable overload re |
August 18, 1998 |
| An overload release apparatus for a robot supports a cutting tool such as an abrasive grinding wheel. A force sensor detects an amount of force applied to the cutting tool by a workpiece while a force release mechanism reduces the force applied to the cutting tool. The force release mech |
| 5792395 |
Plasticization control method for an injection molding machine |
August 11, 1998 |
| A plasticization control method for an injection molding machine in which the plasticized state of resin in an injection cylinder is controlled in measuring based on the detected rotating force of a screw. A reference screw rotating force C or F required for desired measuring operation i |
| 5790558 |
Numerical control apparatus |
August 4, 1998 |
| A numerical control apparatus for making it easy to analyze a cause of the stop of the system due to an abnormality in an error detection communication or an error correction communication and to consider a countermeasures for eliminating the cause. In the numerical control apparatus |
