| Patent Number |
Title Of Patent |
Date Issued |
| 5252799 |
Wire cut electric discharge machine |
October 12, 1993 |
| A wire cut electric discharge machine (1) having an improved wire guide means (17) located at a bent portion of a wire path. The wire guide means (17) comprises a wire guide roller (6) and a wire deviation preventive member (16) whose one end is fixed to the side of body (3). A part of a |
| 5251500 |
Industrial robot with a compound drive mechanism |
October 12, 1993 |
| A compound drive mechanism (30) according to the invention is capable of driving an output element (10, 40) of an industrial robot for a linear motion along an axis and of rotating the output element (10, 40) independently of the linear motion of the output element (10, 40). The mech |
| 5251146 |
Injection compression molding method and an apparatus therefor |
October 5, 1993 |
| An injection compression molding method and an apparatus therefor are provided, which are capable of accurately performing a molten resin compression operation during execution of an injection/hold operation or a metering operation, so as to produce high-quality molded products with no |
| 5249947 |
Injection molding machine having an automatic mold changer |
October 5, 1993 |
| An injection molding machine of an automatic core change type includes a mold clamping section including stationary and movable platens fitted with first and second matrixes of a mold, respectively, a mold changing robot and a mold stocker severally attached to the mold clamping section |
| 5249479 |
Wrist mechanism for an industrial robot |
October 5, 1993 |
| A wrist mechanism comprising a pipe 52 extended in relation to a front .alpha.-axis among the three axes of motion (.alpha.-axis, .beta.-axis, .gamma.-axis) of a wrist, on a center axis A--A of turning motion through the center of an .alpha.-axis reduction gear, a universal pipe coupling |
| 5247295 |
Pulse transfer system for manual pulse generator |
September 21, 1993 |
| A pulse transfer system is provided by which a pulse signal output from a manual pulse generator unit is transferred to a numerical control apparatus through a wireless channel. Pulses are generated in accordance with the rotation of a knob of the manual pulse generator and are counted |
| 5247233 |
Digitizing control device for generating tracing data |
September 21, 1993 |
| A digitizing control device for generating tracing data related to a shape of a model while a tracer head carries out a non-contact tracing of the model shape. The rotation of the tracer head (4) is controlled in accordance with the inclination of a model surface (6), and distance de |
| 5246643 |
Discrimination method for maintenance timing for injection molding machines |
September 21, 1993 |
| A discrimination method for maintenance timing for injection molding machines, detects the respective values of molding process parameters of a plurality of types, including injection time, maximum injection pressure, etc., for each of the injection molding machines (7-1 to 7-M). Up-to-d |
| 5244447 |
Tool management method |
September 14, 1993 |
| A tool management method in a factory automation (FA) system uses an FA computer and machining cells. An FA computer such as a cell controller is connected with computer numerically-controlled units via bi-directional communication lines. When data on a tool service life or the like is |
| 5243265 |
Non-contact tracing control apparatus |
September 7, 1993 |
| A non-contact tracing control apparatus is disclosed which traces the surface of a model by using at least two optical distance detectors for detecting the distances therefrom to the model. When a first light corresponding to a first of the optical distance detectors is detecting a d |
| 5241485 |
Noncontact tracing control system |
August 31, 1993 |
| A noncontact tracing control system for machining or digitizing a workpiece through tracing the shape of a model without a contact therewith. Coordinate values of each vertex of a micro quadrangle on a model surface (6) are obtained from measured values at the previous sampling and the |
| 5241484 |
Tracing control method |
August 31, 1993 |
| A tracing control system machines a workpiece through tracing by repeating a plurality of tracing passes in a tracing direction which is constant to a pick feed while detecting amounts of displacement of respective axes applied to a stylus. A first abrupt change region (P1c) on a model ( |
| 5239477 |
Conversational-type programming apparatus classifying by color regions to be machined |
August 24, 1993 |
| A conversational-type programming apparatus according to the invention originates an NC tape for a numerically controlled (NC) machine tool or the like. In a case where a plurality of machining operations are defined for one region of a blank, a color corresponding to a type of machining |
| 5239159 |
Nozzle movement system for laser machining equipment |
August 24, 1993 |
| Disclosed is a nozzle movement system for a laser machining equipment for moving the nozzle of a CNC laser machining equipment when carrying out a three-dimensional machining of a machining surface of a workpiece. A hand coordinate system composed of the axial direction of the nozzle and |
| 5238617 |
Method of monitoring resin position in mold cavity |
August 24, 1993 |
| A method of monitoring a resin position intended to automatically display the relationship between the state of resin injected into the cavity and the screw position for monitoring. In the cavity, border sections where flow resistance of the injected changes are determined. Subsequently, |
| 5237665 |
System for changing an NC program starting character string to one recognizable to a particular |
August 17, 1993 |
| An NC program output method is disclosed which includes: storing a starting character string (SP.sub.1), which indicates the beginning of an inputted NC program, in a starting character string input memory (M.sub.1); enabling setting of a separate starting character string (SP.sub.2); an |
| 5237656 |
Image processing apparatus using look-up tables |
August 17, 1993 |
| An image processing apparatus is constructed by providing in parallel a plurality of dyadic look-up tables (10, 20) to which plural items of image data (I1, I2) read out of respective image memories (40, 50) are inputted. The dyadic look-up tables output data corresponding to a prescribe |
| 5237150 |
Method of cutting workpiece with laser beam |
August 17, 1993 |
| A thick workpiece is cut by a laser beam of high output power. A laser beam dominantly in a ring mode, with a central region thereof being hollow, is applied to the workpiece to cut the workpiece. The laser beam dominantly in the ring mode is effective to reduce optical distortion due to |
| 5235228 |
Motor balancing structure |
August 10, 1993 |
| Labyrinth disks, which are integral components of an electric motor, provided in the front and rear portions of the motor and/or the rotational speed detecting gear, which also is an integral component of the motor, of a rotational speed detector for detecting the rotational speed of the |
| 5233697 |
PLC processor and PLC |
August 3, 1993 |
| A PLC (programmable logic controller) processor which carries out logical operations. The processor comprises a logical operation unit (2) for executing a logical operation, a jump inhibition unit (3), a jump condition checking unit (4) for checking whether or not a jump can be carri |
| 5233202 |
Method of adjusting an optical path followed by a laser beam in a laser robot and an apparatus f |
August 3, 1993 |
| When an adjustment of an optical path followed by a laser beam is performed by using an adjusting laser beam emitted by a laser oscillating source to obtain a condition such that the laser beam introduced in a robot unit of a laser robot is correctly directed to a light condensing device |
| 5233158 |
Arc welding current and voltage control method |
August 3, 1993 |
| A control method capable of effecting satisfactory arc welding by automatically controlling arc welding current and voltage. A processor calculates (106, 112) errors (.epsilon.I, .epsilon.V) between mean value (I, V) of actual welding currents and voltages periodically detected a pre |
| 5229673 |
Joint construction of cooling pipes for liquid cooled motor |
July 20, 1993 |
| A liquid cooled motor in which cooling pipelines are located in a casing around an outer periphery of a stator core, comprising deformed O-rings (5) provided around the circumferential edges of a deformed cross sectional hole (40) at ends of a casing (1), and circular cross sectional |
| 5227729 |
Fusion detecting system for relays |
July 13, 1993 |
| A fusion detecting system for relays is provided for detecting a fusion of relay contacts. Two fully-interlocked or semi-interlocked relays are connected in such a manner that they operate under identical conditions, and a fused state is detected based on the states of signals sent from |
| 5226852 |
Oldham coupling having grooves with elastic wall portions |
July 13, 1993 |
| Projections (16, 18) formed on shafts (10, 12) and received in grooves (20a, 20b) of an intermediate disk (14) to form an Oldham coupling, in general, perform a small sliding movement relative to the intermediate disk (14), and thus the projections (16, 18) and the side surfaces of the |
| 5225989 |
Apparatus and method for performing simultaneous control of control axes of a machine tool |
July 6, 1993 |
| A control apparatus for a built-on machine tool according to the invention has a plurality of heads or cutters connected to control axes of respective control systems which are controlled independently by individual control programs. The apparatus includes commander for synchronously |
| 5225758 |
Apparatus for driving a variable reluctance motor |
July 6, 1993 |
| A driving apparatus for controlling the drive of a variable reluctance motor in a manner that an average voltage applied to an exciting coil linearly changes with respect to a current deviation or a current command. If the current deviation or the current command is positive or zero, a |
| 5225122 |
Method for taking countermeasures against faulty molding in an injection molding machine |
July 6, 1993 |
| A method for taking countermeasures against faulty molding in which, with the aid of an expert system, restoration to a nondefective molding condition when faulty molding takes place during the mass production of molded products. When threshold values of a plurality of molding parame |
| 5224404 |
Polygon working method |
July 6, 1993 |
| A polygon working method in which a polygonal portion can be formed on a workpiece in such a manner that a specific region of the polygonal portion is accurately in alignment with a predetermined circumferential position on the workpiece. In this method, the workpiece and a tool are |
| 5224031 |
Signal transfer system of programmable controller |
June 29, 1993 |
| Disclosed is a signal transfer control system of a programmable controller for transferring I/O signals between the PC and an external device. An I/O unit (26) includes an I/O signal region (1) for storing I/O signals transferred or received to or from an external device, and mapping dat |
| 5223688 |
Fluid level adjusting apparatus in an electric discharge machining tank |
June 29, 1993 |
| A fluid level adjusting apparatus in an electric discharge machining tank includes an exhaust pipe connected to a machining fluid exhaust port of the machining tank, an adjustment pipe having an upper opening end and a lower opening end connected to the exhaust pipe and height adjusting |
| 5220265 |
Discrete-type repetitive control method and an apparatus therefor |
June 15, 1993 |
| A discrete-type repetitive control unit which enables stable repetitive control even if a state variable of a controlled object is not observable, using time delay elements (Z.sup.-1). The number of time delay elements is equal to or greater than a value obtained by dividing a cycle peri |
| 5218549 |
Axis control system for numerical control apparatus |
June 8, 1993 |
| Disclosed is an axis control system for a numerical control apparatus having first and second microprocessors (11, 21) for interpolating axes that each have a different axis arrangement and first and second interpolation signal generation circuits (17, 27) provided with each of the m |
| 5218281 |
Acceleration/deceleration control method for a numerical control device |
June 8, 1993 |
| An acceleration/deceleration control method for a numerical control device (CNC) which subjects a command value of a velocity in a tangential direction of a traveling path, which is instructed by a pre-interpolation feed command, to an acceleration/deceleration control. A command is read |
| 5217662 |
Automatic lubricant supplying method and an apparatus therefor |
June 8, 1993 |
| A method for automatically timely supplying a lubricant to a machine working section driven by a motor and an apparatus therefor. The quantity of increase of the driving current of a mold clamping servomotor (12) during the process in which a mold clamping mechanism (10) of an injection |
| 5216617 |
Group management system for injection molding machines |
June 1, 1993 |
| A group management system for injection molding machines, capable of rapidly determining molding conditions of a plurality of injection molding machines. Data is supplied through first to eleventh input devices (13a-33c), which indicates types of molding defects appearing in molded a |
| 5216344 |
Involute interpolation speed control system |
June 1, 1993 |
| An involute interpolation speed control system for effecting an involute interpolation to which cutter compensation is applied when machining by a numerical control apparatus and the like, comprises a method of outputting commands for a direction in which a first involute curve as an act |
| 5216342 |
Sliding mode control method with a feedforward compensation function |
June 1, 1993 |
| A sliding mode control method with a feedforward compensation function achieves a control response characteristic adapted to varying system parameters and properly maintains a manipulated variable affecting a controlled object. A position deviation (.epsilon.), speed deviation (.epsi |
| 5216222 |
Attitude control system for CNC laser beam machining apparatus |
June 1, 1993 |
| An attitude control system controls the attitude of a nozzle of a CNC laser beam machining apparatus with respect to a workpiece surface being three-dimensionally machined thereby. An interpolator (1) for interpolating values with respect to .alpha.-, .beta.-, X-, Y-, and Z-axes prod |
| 5214591 |
Method of correcting error on involute interpolation |
May 25, 1993 |
| An involute interpolation error correcting method corrects an error on involute interpolation in a numerical control system for machining gears and pump vanes. The method corrects an insufficient cut in an actual configuration of a workpiece which is machined along a first involute c |
| 5214531 |
Operation control system for a scanning galvanometer |
May 25, 1993 |
| An operation control system for a scanning galvanometer associated with an arc sensor (20) of a welding robot for sensing a weld line, and having a swing mirror (23) integral therewith for a laser beam scanning. A memory (43) stores waveform data of a galvanometer drive command current o |
| 5210478 |
Method of correcting machine position change |
May 11, 1993 |
| A method of correcting a change of position of a machine tool having at least two control axes. A position change check simulator (14) obtains a ratio (R2) of amounts of movement of respective axes (Xe1, Ye1) obtained from output values of position detectors (8X, 8Y) for detecting a posi |
| 5209618 |
Method of setting tracing zone |
May 11, 1993 |
| A method of setting a tracing zone in a contour tracing in which a surface of a model is traced by a contour tracing to thereby machine a workpiece. The contour tracing zone is set by a plurality of straight lines forming a polygonal shape (43, 44, 45), and when a stylus (5) reaches the |
| 5208524 |
Current control apparatus for PWM control |
May 4, 1993 |
| A current control apparatus is provided for PWM-control of motor current using a microprocessor. Since motor current enters a control processor as a discrete value, a delay in control always arises. In prior art, it is not possible to accurately predict the actual current value needed fo |
| 5208439 |
Laser beam relay unit |
May 4, 1993 |
| In a laser beam relay unit for shifting the direction of a laser beam, two reflecting mirrors (31, 37) are placed in parallel to each other and at a predetermined angle relative to incident light, and are fixed to rotatable light guide members (33, 36), respectively. Reflecting-mirror ho |
| 5206873 |
Turbo blower for laser and laser oscillation device employing the turbo blower |
April 27, 1993 |
| A turbo blower is used in combination with a gas laser oscillation device for machining, e.g., cutting off, workpieces. The turbo blower comprises a shaft (2) having an impeller (1) on one end thereof, a pair of bearings (5, 6) on which the shaft (2) is supported, and a motor (3, 4) for |
| 5206473 |
NC laser device |
April 27, 1993 |
| There is provided an NC laser device including a combination of a numerical control device and a laser oscillator. A laser output command is sent to an output control circuit at the time of starting and the laser output is monitored by a power sensor to obtain a ratio of the command valu |
| 5204602 |
Servomotor control method |
April 20, 1993 |
| A servomotor control method capable of automatically effecting optimum backlash acceleration correction under various machine operating conditions. A backlash acceleration correction process is started when the sign of a positional deviation is inverted, and is cyclically executed th |
| 5204598 |
Method and apparatus for stopping an industrial robot |
April 20, 1993 |
| An industrial robot having a plurality of axes drivable by respective servomotors is stopped in operation after detecting a collision of the industrial robot with foreign matter. The monitoring of a position error of a servomotor for the axis with respect to which the collision is de |
| 5204597 |
Externally extended type programmable controller |
April 20, 1993 |
| Disclosed is an externally extended programmable controller in which a part of a control function is independently provided as an external unit, which comprises a main programmable machine controller (PMC) (2) contained in a numerically controlled apparatus (CNC) (1) and controlled in re |
