| Patent Number |
Title Of Patent |
Date Issued |
| 5148090 |
Variable reluctance type AC servo motor |
September 15, 1992 |
| This invention determines the configurations of a rotor (10) and a stator (12) and conductance periods and conductance phases of the conductance currents to obtain a smooth rotation of a variable reluctance motor as an AC servo motor. When the number of phases of a motor is m, the number |
| 5147659 |
Nozzle touch apparatus in an injection molding machine |
September 15, 1992 |
| A nozzle touch apparatus (5) for use in an injection molding machine, which is capable of automatically adjusting a nozzle touch force in a multi-stage fashion during execution of an injection molding cycle, having springs (56) each fitted on a guide rod (52) and disposed between a ball |
| 5146402 |
Profile definition method |
September 8, 1992 |
| A method for defining a profile in an automatic programming system containing previously designated figure elements. Only figure elements which intersect a designated starting point are provided for selection in defining a profile element. Upon selection of a figure element, only poi |
| 5146084 |
Rotary code disk mounting structure for an optical encoder with an adhesive substance filling th |
September 8, 1992 |
| The present invention is directed to a rotary code disk mounting structure for an optical encoder. A rotary code disk (3) with no center hole is fastened to a spindle (2) by an adhesive (J) that a is put in a recess (21) formed in a mounting surface (20). The mounting surface (20) is |
| 5144550 |
Test run control method |
September 1, 1992 |
| A test run control method tests a computerized numerical control (CNC) apparatus to check a generated NC program. Data are read block by block from an NC program in response to a test run start command (ST1), the data are converted into execution blocks while forwarding a tool in a forwa |
| 5144213 |
Brake control method of gravity axis |
September 1, 1992 |
| A gravity axis brake control method of controlling the brake of the gravity axis of a computerized numerical controlled machine tool, wherein a computerized numerical control (CNC) notifies a programmable controller (PC) that the control of the gravity axis will be interrupted (Step S1), |
| 5142179 |
Stator structure of built-in motor |
August 25, 1992 |
| The stator of a built-in motor must be firmly and accurately mounted on the spindle head housing or the like of a machine tool. A stator core (10), i.e., a principal component of the stator is welded partially at the circumference (14) thereof, and then the circumference of the stator co |
| 5140239 |
Non-contact tracer control device |
August 18, 1992 |
| A non-contact tracer control device for carrying out a profile machining on a workpiece while tracing the profile of a model in a non-contact fashion. Two non-contact distance detectors (5a, 5b) are slantingly mounted to a tracer head 4) controlled through a rotary axis, and measurement |
| 5140237 |
Computerized numerical control method |
August 18, 1992 |
| A CNC method controls a plurality of paths with a single computerized numerical control apparatus. In the CNC method, an order (6) in which to execute part programs (5) for the respective paths (4) is designated, and the part programs (5) are sequentially executed in the designated order |
| 5140236 |
Spline interpolation method |
August 18, 1992 |
| A spline interpolation method of subjecting given points to interpolation by using a cubic spline curve is provided. A first-derivative vector is derived from a preset number of points including a starting point (P.sub.1), and a cubic equation between the starting point and a next po |
| 5140211 |
Rotor structure of a synchronous motor |
August 18, 1992 |
| Provided is a rotor structure of a radial type synchronous motor having a rotor core (10) is held between permanent magnets (12) wherein end plates (14) are attached to ends of the rotor (8) in a direction of the central axis (6) of the rotor, each of which plates is provided with projec |
| 5140129 |
Multi-articulated arm type industrial laser robot |
August 18, 1992 |
| A laser beam passage (10) arranged outside a robot unit of a multi-articulated arm type industrial laser robot has a base (71), a swivel body (72), a first robot arm (74) supported for swing motion, a second robot arm (76) pivotally joined to the first robot arm (74), and a robot wri |
| 5140124 |
Machining fluid circulating apparatus |
August 18, 1992 |
| A machining fluid circulating apparatus capable of variably controlling the amount of machining fluid supplied to an electric discharge machining region and maintaining the effective amount of the machining fluid supplied to a worktable unchanged. The amount of water which is supplied |
| 5138557 |
Corner shape insertion method |
August 11, 1992 |
| The invention relates to a corner shape insertion method for inserting a corner shape such as a chamfered or rounded corner portion having prescribed dimensions at a corner of a profile (OLF) comprising a plurality of figure elements (S1-S8). When limits (indicated by the dashed-line |
| 5136606 |
Discharge tube for a gas laser device |
August 4, 1992 |
| A discharge tube for a high-speed axial-flow type discharge pumping gas laser device is provided, in which a capacitive load medium (9) under metal electrodes (2a, 2b) has convexly curved faces opposed to each other and constitutes a discharge tube. With this construction, the distributi |
| 5136224 |
Digitizing method |
August 4, 1992 |
| A digitizing method for digitizing model surface data by tracing a model (MDL) with a stylus (STL) is described. At the time of digitizing, a time (T) required for predetermined conditions to be satisfied and stylus traveling distance (.DELTA.L) during this time are monitored, tracing |
| 5136223 |
Robot operating method capable of manual correction |
August 4, 1992 |
| A robot operating method capable of easily performing manual correction of a previously taught teaching point during an automatic robot operation, and of accurately and effectively performing a desired robot operation without the need of employing a visual sensor. After switching is made |
| 5136136 |
Laser processing apparatus |
August 4, 1992 |
| A laser processing apparatus including a laser oscillator, a beam expander, and a light converging system. An output-end-side optical component formed by the beam expander and the light converging system includes one light converging system having composite characteristics of the optical |
| 5134332 |
AC spindle motor and method of changing rotating speed of same |
July 28, 1992 |
| An ac spindle motor (10) for driving a spindle motor of a machine tool provided with a rotor (14) having an output shaft (12) connected to the spindle, and a stator (16) surrounding the rotor and having a laminated core (20) serving as a yoke, and stator winding assemblies of three phase |
| 5132913 |
Method and apparatus for creating a three-dimensional space curve by smoothly connecting a three |
July 21, 1992 |
| A three-dimensional sequence of discretely given points Pi (i=1, 2, . . . ) is projected onto two mutually adjacent planes (XY plane, YZ plane) in a rectangular coordinate system. Next, two-dimensional point sequence connecting curves (TQ, TR) which smoothly connect the projected point |
| 5130585 |
Hollow shaft motor |
July 14, 1992 |
| A hollow shaft motor which has a ball screw shaft (24) passed therethrough and which drives the ball screw shaft (24) to rotate, wherein provision is made for flow paths (28, 30, 32) for passing compressed air for cooling purposes to one end of the motor so that the heat generated by the |
| 5130515 |
Control method for arc welding robot |
July 14, 1992 |
| One cycle of a weaving pattern suitable for the shape and material of the base metal to be welded is taught and stored, and a welding torch is made to weave in accordance with the suitable weaving pattern. Consequently, arc welding can be carried out by using a weaving pattern suitable f |
| 5129808 |
Two-plate type injection apparatus |
July 14, 1992 |
| A lightweight, compact, and low-cost two-plate type injection apparatus attached to an injection molding machine which includes an injection screw (50) spline-connected to a screw sleeve which is rotatably supported by a pusher plate (20) movable toward and away from a front plate (10). |
| 5127282 |
Bevel gear unit and a wrist mechanism for an industrial robot incorporating the same |
July 7, 1992 |
| A bevel gear unit comprising a bevel gear (11), a ball bearing (B.sub.1) coaxially mounted on the shaft of the bevel gear (11) and in contact with the back surface (17) thereof, a double spacer including an inner race spacer (12) and an outer race spacer (13) and mounted on the shaft of |
| 5126956 |
Method and apparatus for displaying segments of a ladder diagram which turn on an operator speci |
June 30, 1992 |
| An apparatus for displaying a ladder diagram in a numerical control system having a programmable sequence control function in which sequence processing is executed based on a sequence program to deliver commands from a numerical control device to a machine and signals from the machine |
| 5126646 |
NC program drawing method |
June 30, 1992 |
| An NC program drawing method for an interactive numerical control device is provided, in which an NC program is represented by a composite drawing composed of a solid drawing (1a, 1b, 1c) and a wire frame drawing (1d, 1e), whereby the drawing of machining profiles and tool paths, etc., c |
| 5126608 |
Motor housing with integrally molded electric connector |
June 30, 1992 |
| A motor housing structure with an integrally molded electric connector comprises a front flange (26) and a molded rear housing (28) fixed respectively to the front and rear ends of the core (12) of the stator (10) of a motor, and supports a rotor (20) for rotation in rotary bearings |
| 5124997 |
Turbo blower for a laser device and a laser oscillator device |
June 23, 1992 |
| A turbo blower for a laser device, including a shaft having an impeller on one end thereof, a pair of bearings, having inside grease spaces and supporting the shaft Non-contact seal portions are provided for preventing an outflow of grease, whereby other spaces for retaining the grease a |
| 5124622 |
Remote diagnosis system of numerical control apparatus |
June 23, 1992 |
| A system for a remote diagnosis of a numerical control apparatus (CNC), for remotely diagnosing a failure of the CNC. A personal computer is operated by a service engineer and a remote operation command is output to the CNC through a communication line. Diagnosis data of the CNC is selec |
| 5124621 |
Reference point return system |
June 23, 1992 |
| A system is provided for carrying out a reference point return in a numerical control device. A deceleration dog (31) is arranged at a machine table (1) and includes a reference point (4). A deceleration limit switch (2) is operated when in contact with the deceleration dog (31), to |
| 5122980 |
Encoder interpolator circuit |
June 16, 1992 |
| 2M-bit position data is divided into lower-order M-bit data and higher-order M-bit data. The lower-order M-bit data is stored in a lower-order storage area (14a) of a read only memory (ROM) (14), the higher-order M-bit data is stored in a higher-order storage area (14b) of the ROM. T |
| 5121116 |
Absolute position encoder |
June 9, 1992 |
| An absolute position encoder for detecting the position of a moving object includes a coding part attached to the moving object which receives sinusoidal and cosinusoidal signals through channels. Each channel receiving signals having a different number of cycles from the other chann |
| 5121041 |
Tracing control system |
June 9, 1992 |
| A tracing control system for machining a workpiece through tracing by calculating speed commands of respective axes, using change amounts detected by a tracer head, and by moving a cutter relative to the workpiece through a control of the speed of the respective axes in accordance wi |
| 5120954 |
Circuit for adjusting encoder signals |
June 9, 1992 |
| An encoder having two encoder units. An encoder having two encoders each having means for storing offset between said two encoder units and means for reading and correcting the offset. An encoder having an encoder with means for storing amplitude difference and phase difference between t |
| 5119006 |
Method of detecting a collision of machine operating parts driven by servomotors |
June 2, 1992 |
| A collision detecting method is provided which is capable of promptly detecting a collision of robot operating parts driven by servomotors, e.g., robot arms, with a foreign object. Prompt detection of such collisions aids in preventing or limiting damage to a machine, etc. by the col |
| 5119004 |
Reference-point return method |
June 2, 1992 |
| The invention relates to a reference-point return method for returning a movable element of a machine to a reference point using solely a linear scale, without relying upon a limit switch. The method includes providing the linear scale (1) with a second scale portion (2) for stipulating |
| 5117083 |
Jump control system for an electric discharge machine |
May 26, 1992 |
| A jump control system for an electric discharge machine for controlling a jump of the electrical discharge machine. A discharge state is estimated from a discharge voltage (Vn, Vm, Tn) and a discharge current (In) between an electrode (34) and a workpiece (35), and a fuzzy inference is e |
| 5115690 |
Multi-articulated industrial robot with an offset robot arm |
May 26, 1992 |
| An articulated industrial robot comprises a robot body (10), a robot upper arm (20) pivotally supported in a joint provided on the upper end (16) of the robot body (10) for a swing motion about a horizontal W-axis, and a robot forearm (30) pivotally supported in a joint provided on the |
| 5115239 |
Magnetic absolute position encoder with an undulating track |
May 19, 1992 |
| A magnetic-type absolute position encoder includes a magnetic drum having a magnetic material magnetized on a circumferential surface thereof is rotated and absolute position in one revolution is calculated based on sinusoidal and cosinusaoidal signals outputted by a magnetic reluctance |
| 5115177 |
Malfunction diagnosis method |
May 19, 1992 |
| Disclosed is a malfunction diagnosis system used for the diagnosis of a malfunction of a numerical control system (CNC) having a programmable controller (PC) by a remote host computer. A host computer (4) reads input and output signals of a programmable controller (PC), diagnoses the |
| 5113407 |
Discharge tube for laser oscillator |
May 12, 1992 |
| At least one pair of electrodes (5a, 5b) are provided on the surface of a dielectric discharge tube (1), and radiating fins (2a, 2b) are attached to a part of the electrodes (5a, 5b). A ceramic clamp (3) and a stainless-steel backup plate (4) are engaged with recessed portions of the |
| 5113359 |
Method for selecting inputs for a PC in which a ladder program is simulated |
May 12, 1992 |
| A simulation method for a programmable controller (PC) is provided in which a ladder program (22) of a PC is simulated. A cursor (1) is set at a relay contact on a screen (42a) displaying the ladder program (22) to directly change the input signal. A logical process is performed on the i |
| 5113338 |
Similar shape part program creation method |
May 12, 1992 |
| The invention includes defining a profile of a part having a plurality of similar shapes (F1, F2, F4, F5); creating a part program for machining a first similar shape (F1), serving as a reference, by a motion definition statement; specifying similar shapes (F2, F4, F5), which are to be |
| 5113050 |
Method of creating coreless-machining NC data for wire cut electric discharge machining |
May 12, 1992 |
| A method of creating coreless-machining NC data for wire-cut electric discharge machining is performed by an automatic programming device. After reading out a contour (C1) of a machining area (A1), a wire extension position (P0), and the maximum cutting amount from a part program, the |
| 5111709 |
Industrial robot with a telescopic horizontal arm |
May 12, 1992 |
| An industrial robot with a horizontal telescopic arm unit having an arm casing horizontally slidably mounted on a vertical upright column, a telescopic arm encased in the arm casing to be telescopically moved with respect to the arm casing and in synchronism with the horizontal sliding |
| 5111532 |
Method of setting drawing parameters for an XY plotter |
May 5, 1992 |
| A drawing parameter setting method capable of setting drawing parameters for an XY plotter.When two vertexes (P1, P2) of a drawing subject region including a figure (F1'), for which a figure conversion process including figure movement, enlargement and reduction has been performed on a C |
| 5111474 |
Laser oscillator device |
May 5, 1992 |
| A laser oscillator device comprises an electric-discharge tube for producing an electric discharge in a laser gas contained in the electric-discharge tube for laser excitation, an optical resonator for effecting laser oscillation, and a gas circulating device having a gas blower and |
| 5111019 |
Variable-pitch spot welding gun assembly for a welding robot |
May 5, 1992 |
| A variable pitch spot welding gun assembly for a welding robot has a fixed base (16) directly attached to the robot wrist (12) of an industrial welding robot, welding transformers (24, 26) fixed to the fixed base (16), a fixed spot welding gun (22) provided apart from the welding transfo |
| 5109513 |
Interrupt control circuit for multi-master bus |
April 28, 1992 |
| In an interrupt control circuit for use with one of a plurality of modules connected to a multi master bus (12) which accepts an interrupt request from another module through a multi-master bus (20), an interrupt vector number is generated corresponding to an interrupt source, and is sen |
| 5107716 |
Horizontal revolute robot |
April 28, 1992 |
| In a horizontal revolute robot, an upper end of a ball screw (21) of a direct-acting actuator (100) is rotatably supported by a top plate of a column (10), and the lower end thereof is coupled to a drive unit (40) disposed on a base plate of the column. A first link (220) is pivotally |
