Abstract: An apparatus for machining a non-circular workpiece, wherein the profile data of plural sections of the workpiece stored in the profile data storage means are transformed into the frequency functions of 1 to n degree which is a function of the rotary angular velocity of the workpiece. The calculation means finds the amplitudes and the phases of each degree of the frequency function of each of plural intermediate sections by means of the interpolation according to the position between selected two sections based on the frequency functions of the selected two sections so as to obtain high frequency functions and low frequency functions which are then converted to high frequency and low frequency profile data. The machining apparatus actuates a linear motor in accordance with the high frequency profile data and actuates a PZT actuator in accordance with the low frequency profile data.

Abstract: The designing of a cavity shape of a mold by utilizing solidification analysis is conducted by (a) preparing a two-dimensional small element model of a casting to be produced in the cavity, the casting including an article portion and a portion connected thereto for feeding a melt to the article portion; (b) determining a solid fraction distribution of the model by conducting the unsteady heat transfer calculation by a heat flux method; (c) correcting the solid fraction distribution by taking into account the heat transfer in a direction perpendicular to the two-dimensional model; (d) observing whether or not there is a closed loop of the solid fraction in the article portion; and (e) modifying the cavity shape to eliminate a closed loop of the solid fraction, if any, from the article portion.

Abstract: An apparatus for processing embroidery data utilized by a sewing machine for forming zigzag stitches, including a first and a second memories for storing point data indicative of positions of a series of points and a width of zigzag stitches. The apparatus further includes a producing device for, by utilizing the point data and the width data, determining a first and a second virtual line for each of line segments each of which connects between a corresponding one of pairs of adjacent two points out of the series of points, such that the first and second virtual lines are parallel to the each line segment and are spaced apart from each other by the width, and producing block data representative of a trapezoid bounded by a first and a second base parallel to each other and a first and a second leg which are not parallel to each other.

Abstract: A method of and an apparatus for controlling the moving speed of a vehicle, which makes a vehicle run at a constant speed independent of applied load by specifically instructing the moving speed according to the difference between the computed number of pulses and the actually detected number of pulses. The vehicle moving speed is properly controllable in correspondence with load applied to the moving vehicle.

Abstract: A concave Fresnel mirror, suitable for use in image display systems. With proper orientation of the facet slopes of the Fresnel mirror, the angular field presentation to the eye will represent a constant magnification for all points in the object space at the nominal eye position determined from the intended application of the invention. This invention provides a numerical means to determine the facet slopes of off-axis Fresnel reflectors using commonly available spreadsheet software which is then easily transformed into numerical control data for cutting the desired configuration.

Abstract: An automatic adjusting apparatus for adjusting equipment which comprises an adjustment state detecting section and a processing section. The detecting section detects an adjustment state of the equipment so as to output one or a plurality of adjustment state indexes on the basis of the detected adjustment state and the processing section performs the process on the basis of the adjustment state index to adjust the equipment. The processing section is equipped with an adjustment state evaluation section for calculating and outputting, on the basis of the adjustment state index, an adjustment evaluation value and an adjustment amount calculation section for calculating, on the basis of the adjustment state index, adjustment amounts for one or a plurality of portions of the equipment. Also included in the processing section is an adjustment control section for selecting, on the basis of the adjustment evaluation value, an adjustment amount from the outputs of the calculation section.

Abstract: A method of displaying a figure on the screen of a CRT of an NC system so that an operator can easily confirm whether or not a machining locus which is formed by a machining path of a wire electrode in a wire cut electric discharge machining apparatus during an operation of machining a workpiece to he machined according to an NC program, includes a closed loop machining path. The closed loop may cause undesired deformation of the workpiece finally machined. With such an NC controlled machining system, an accurate correction for the machining locus can be accomplished with ease, and therefore the machining apparatus is high in reliability and operability.

Abstract: A compound control method involves Proportional Plus Integral Plus Derivative Control (PID control) and Fuzzy Control. The method controls a system by inputting output data of the system to be controlled to a PID control operation so as to obtain a control variable from the PID control operation, inputting the output data also to a fuzzy operation so as to obtain a correcting variable from the fuzzy operation, correcting the control variable by the correcting variable so as to obtain a corrected control variable, and controlling the system by the corrected control variable.

Abstract: A control apparatus provided for an FMS line having a robot for carrying a workpiece and an AGV for carrying a jig to be coupled to the workpiece. The control apparatus generally includes a production instruction device and an AGV movement control device. The production instruction device determines a schedule for supplying jigs on the basis of a work supply order schedule. The AGV movement control device causes an AGV to skip an unavailable station and to move to an available station in accordance with the presence or absence of a workpiece and/or a jig and a kind of a cell to which the AGV is to be moved. The robot operates continuously in the order of the disposition of cells. According to the structure, simplification and cost reduction of the control apparatus are attained.

Abstract: 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 curve (In1) that is commanded. A radius of curvature (Rs) from a base circle (C) to a starting point (Ps3) of the insufficient cut on the first involute curve (In1), and an error (De) which occurs at an ending point of the first involute curve (In1) in a direction normal to the insufficient cut, are determined from the machined configuration, and set as parameters in the numerical control system. On interpolation from the starting point (Ps3) of the insufficient cut to the ending point (Pe1) of the first involute curve, a first offset at the time the first involute curve is interpolated is changed to a second offset which is increased from the first offset by the error (De).

Abstract: In an adaptive control system, an input of an object to be controlled is varied by a small value, and a resultant output is detected. The small value is changed on the basis of the difference between the output and an aimed value, and trials are repeated. The small value is determined on the basis of a qualitative model which is composed of a boundary function including the input and boundary parameters of the object. If the trend in the difference between the output and the aimed value is to make it larger, the qualitative model is changed so that the trend is to make it smaller.

Abstract: When a position of a tool blade tip for displaying the work shape, tool shape and tool locus is calculated by an interpolation arithmetic operation based on the interpolation instruction and feed speed instruction within a numerical control data, the calculated position of the tool blade tip is compared with the display scope every time an interpolation arithmetic operation is conducted; a determination is made as to whether or not the tool shape and tool locus to be displayed are inside of the display scope, and when they exist outside, uses a higher speed as the feed speed for the interpolation arithmetic operation. Therefore, even when an operator tries to check numerical control data by reducing the display scope for local graphic display, the interpolation outside the display scope can be conducted at a higher speed to thereby allow the operator to check the numerical control data quickly and immediately.

Abstract: The parts supply instruction apparatus includes a production schedule system, a parts information system, a car information system, and an order issue managing system which are preferably located at an assembly factory. The order issue managing system scans a parts master file and extracts required data therefrom relating to parts to be ordered to produce order issue data. The order issue data is sent to a received order managing system which is located at a parts supply factory. The type of parts supply order system operated by the apparatus can be changed between the production schedule system, the part information system and the car information system merely by changing a designation parameter corresponding to a respective system, inserted in an order type column of the parts master file.

Abstract: An adaptive control man-augmentation system controls the movement of a suspended work station. A support structure, usually mounted on a chassis, has with an extendable boom and a work station at the end of the boom. A directing member pivots in accordance with operator movements and the pivotal movement is resolved along two axes, normal to each other and having a fixed relationship within the boom. Resolving of operator movements provides signals for moving the boom so as to move the work station to any desired location, in response to operator movements. The position of the work station is monitored. The signals are continuously monitored and adapted with respect to situation variables to produce immediate and accurate movement response of the workstation to match operator requirements.

Abstract: A control circuit layout of a control system is divided into two partial strands 110, 112 connected in parallel, each partial strand 110, 112 provided with two control elements 114, 118 of different sensitivity. Supplemental controls 140, 142 assure the automatic transition without jolting between the partial strands 110, 112 whenever the range is exceeded or, declined by, the set control variable value. If needed, each partial strand is provided with its own measuring apparatus.

Abstract: The invention relates to a system for checking tool breakages on a machining center equipped with a numerically controlled machine tool (100) and a tool magazine (200), in which there are at least two cameras (401,402), processing and control means (600), the system thus making it possible to take photographs of tools intended to carry out the machining of a part in one or two planes, one photograph being taken prior to machining and the other afterwards, the photographs obtained then being compared in order to detect any abnormal conditions on the tools, the photographs taken by the second camera (402) being focussed on the basis of length information obtained with the photographs taken by the first camera.

Abstract: A control system for heat-treating parts in a furnace structure is provided. A plurality of processing chambers, each having at least one part position, are adapted to simultaneously process a plurality of parts each for a respective predetermined processing time. A memory device stores first records representing processing times associated with each of the parts within each processing chamber, second records representing a desired processing path associated with each part through at least one processing chamber, and third records representing the number and location of occupied part positions within each processing chamber. A computerized control center calculates desired processing times associated with at least one processing chamber for a new part to be processed in the processing chamber.

Abstract: An improved luminaire load control system for handling control signals as by converting them into power line carrier communication signals which are transmitted through branch power lines to terminal control units without causing any significant interference to power line installation. The conversion of the control signals is done respectively at a plurality of gate way units mounted on each branch power line and each gate way unit further includes memory unit for storing the information regarding to the connecting status of the terminal unit for sending back the stored information to a central control unit upon receipt of a send back command therefrom.

Abstract: On a display device, one or more machining portions in the entire working surface of a workpiece are displayed as image variations in gradiation, hue or tone throughout in a direction normal to the axis of the workpiece, to thus facilitate recognition of the machining state. A graphic display system is combined with a numerical control grinding machine to display images of a workpiece being machined and its working surfaces. The workpiece is displayed on the display device as a projection thereof on a plane parallel to the axis of the workpiece. Machining portions in the entire working surface of the workpiece are displayed in gradation, hue or tone changes, throughout in a direction normal to the axis of the workpiece, in accordance with changes in the cut-away amount.

Abstract: A synchronizing control apparatus for synchronously rotating master and slave main spindles of a pin grinder, wherein a servomotor for the slave main spindle is rotated at a speed corresponding to a compensated command value while the master main spindle is rotated at a speed corresponding to a noncompensated command value. The compensated command value is calculated based on a synchronizing error between the master and slave main spindles at a predetermined interval longer than the length of instable condition of a servo loop for the slave main spindle. When the synchronizing error is larger than a predetermined limit value, the command value for the slave main spindle is gradually compensated in order to prevent the compensated command value from changing too abruptly.