Abstract: A method and a device for controlling a number of machining processes on a machine tool with the help of a control device (20) that controls at least one tool for performing said number of machining processes under the direction of a control program, whereby the control program is created using a description of the tools required for performing the machining processes, and whereby the data for describing the tool are hereby divided in memories (24, 25) of the control device (20) into: (a) abstract tool data for describing a standard tool (V1, V2), and (b) specific tool data for correcting and/or adapting the abstract tool data to the actually used tool (R1, R2) or to machine-specific characteristics, whereby the tool description in the control program is obtained by linking the abstract tool data with the specific tool data.

Abstract: Pieces of information such as work program information, work profile and work condition, which are necessary for an operator to grasp a state of a machine tool, a change in the work voltage necessary for an operator to grasp a state of working a workpiece, pieces of work monitoring information such as a change in the work speed, and measured data of the workpiece are display on a list by a display device of a numerically controlling device for each session of work.

Abstract: A wire-electrical discharge machine infuses a processing liquid in a gap between a wire and a workpiece and processes the workpiece using predetermined processing parameters. The machine includes processing parameter storage means that stores processing parameters, means that stores a relationship between the nozzle heights and the amount of processing energy, processing energy determining means that determines the amount of processing energy, for example, during rough processing based on such relationship, and processing parameter changing means that changes the processing parameters based on the amount of processing energy. The workpiece is processed using the changed processing parameters. According to this construction, wire breakage can be prevented and the accuracy of the processed surface can be improved.

Abstract: The present invention generally relates to a system and method for manufacturing plastic injection mold cavity components. More specifically, the present invention provides an integrated system and method for manufacturing plastic injection mold cavity components, which integrates manufacturing between two or more subcells. In one embodiment of the invention, a supercell system integrates two or more subcells, in which component workpieces and electrodes are machined. A supercell may include a computerized master control unit, configured to monitor and provide instructions for a master robot that delivers and retrieves workpieces and electrodes to two or more subcells. Thus, two or more subcells may be integrated by the master control unit, the master robot, a track or path that the master robot follows, identification indicia attached to workpieces and electrodes, a combination thereof or any other components of supercell that may suitably integrate two or more subcells.

Abstract: A detected value indicating a machining state is filtered and a machining gap between an electrode and a workpiece is adjusted by using a control variable obtained through the filtering. Therefore, machining speed can be improved by maintaining a stable machining state through suppression of a disturbance in a gap distance control system due to eccentricity of an electrode, due to fluctuations in electric characteristics at feeding brush sections, and due to mechanical resonance of the electrode driving system.

Abstract: A numerically controlled machining apparatus that displays data, such as a tool reduction allowance, a tool core gap amount, and a tool shape and the like for a tool. The data is displayed along with the setting condition of a tool as it is set by a tool exchanging device. The data is detected by a tool set detecting device. A tool setting condition display identifies a tool which is set in the tool exchanging device and a tool that is not set in the tool exchanging device by use of a different color.

Abstract: A method and a device are for controlling multiple machining processes in a die-sink erosion machine with several identical or different electrodes (R1, R2, R3, R4), whereby the machining sequence of the machining processes and the electrode used for each machining process are determined by providing the following criteria: a) predefining priorities of workpieces to be machined, of a group of machining procedures, of individual machining jobs (ARB), of work cycles (AZ) and/or work steps (AS) of a machining job; and/or (b) predefining the life span or wear limit of the electrodes used for the individual machining jobs, work cycles or work steps. The overall machining on the die-sink erosion machine is performed with consideration of the determined machining sequence.

Abstract: A method of controlling a process of electrochemically machining an electrically conductive workpiece employing the spectral composition of the measured voltage within a predetermined measuring period such as induced by an applied current between the electrically conductive workpiece and an electrode tool. A process of electrochemically machining employing a material removing step with electric current supplied continuously and an a workpiece shaping step with electric current supplied intermittently. An advantageous embodiment employs extreme short pulses.

Abstract: A method, using computer aided design logic and apparatus for part design, representation and fabrication. The system uses standard EDM technology to remove metal. The EDM anodes are provided in a variety of cross sectional shapes and their working ends are automatically shaped by the system to standard shapes in order to remove subsections of metal to shape the desired part. Anode positioning is attained by the use of a multi-axis positioning robot to move either part or cutter or both, with up to five degrees of relative motion. Through the use of the computer system and the automatic creation of the cutting tools, all cut “operations” can be performed with minimal operator assistance, on one machine, in typically one or two part holds. The raw material is considered as comprising two groups of particles. One group is removed to produce the part. The other group comprises the part.

Abstract: An electroerosion machining device to machine a piece (14) by milling successive layers, comprises a member (30) to drive in rotation an electrode-tool (31) of tubular shape and a digital control unit (CN) to control the three-dimensional movement (x, y, z) between the electrode-tool and the piece (14). A regulation module (MR) is adapted to simulate the longitudinal wear of the electrode-tool and to compensate it along its path. According to the type of geometric configuration between the electrode-tool and the piece, namely the presence or absence of an opening below the electrode-tool and the presence or absence of one or two walls, different values of longitudinal wear are provided and transmitted to the digital control unit (CN). There is thus obtained a high precision and planarity of machining.

Abstract: A discharge pulse number generated between a wire electrode and a workpiece is counted every predetermined time. A ratio Px/Ps of this counted value Px to the reference pulse number Ps will be determined to control an amount of coolant in response to this ratio Px/Ps. Also, in response to this ratio Px/Ps, an amount of movement within predetermined time is controlled. Further, through the ratio Px/Ps and the like, quiescent time to be controlled by the detection voltage generator is controlled. Thereby, surplus supply of energy is prevented, the machining speed and machining precision is improved and any disconnection of the wire electrode is avoided.

Abstract: A method of and an apparatus for determining a machining sequence of wire-cut electric discharge machining capable of easily changing a machining sequence in continuously machining a plurality of machining shapes. By making a sequence of a combination of a shape to be machined and a machining stage for the shape to be machined capable of being edited, the machining sequence in the case where the plurality of machining shapes are machined continuously is made easily changeable. In the method for specifying the machining sequence, two different modes are available. In a first mode, a plurality of standard machining patterns are prepared in advance, and the machining pattern is changed to form a desired machining pattern. In a second mode, a sequence of a combination of a plurality of shapes to be machined and the machining stages for a selected machining pattern is changed to form a desired machining pattern.

Abstract: An error signal is obtained from a reference value and a value indicating a detected state in machining, a first controlled variable is obtained by adding a value obtained by multiplying the error signal by a proportion gain to a value obtained by multiplying the error signal by a first integration gain, a second controlled variable is obtained by multiplying an instruction value by a second integration gain for integration, and a value obtained by adding the first controlled variable to the second controlled variable and multiplying the sum by a machining trajectory vector is used as a controlled variable for a driving unit for adjusting a distance between an electrode and a workpiece in discharge machining. Therefore, it is possible to realize a discharge machining control method and apparatus in which the machining speed can be improved by always maintaining the discharge machining process in an optimal state.

Abstract: The present invention relates to an improved servomechanism for regulating the spark gap in micro electrical discharge machining (micro-EDM). The present invention utilizes a hybrid two actuator servo system for positioning the micro-EDM electrode. The hybrid system comprises a fast, easily controllable, short stroke actuator (such as a piezoelectric actuator) for good instantaneous response, and a second, slower actuator for positioning the fast actuator and for providing the required long stroke. This allows the slower actuator to “feed” the electrode into the work-piece utilizing its long stroke, and the fast, short stroke actuator to respond quickly to instantaneous variations in the spark gap, such as short circuits.

Abstract: A method of and an apparatus for determining a core-less machining shape, in which an attribute of core-less machining or contour machining is automatically designated to a machining shape created in advance, and a storage medium storing a core-less machining shape determining program. Programs for judging a size of a machining shape based on horizontal and vertical maximum dimensions, a diameter or a radius of a circle, a peripheral length, a width and an area are stored in an automatic programming device in advance. Programs to be executed are selected from the stored programs and a way of logical operation on results of judgment by the selected programs is designated.

Abstract: In a wire cut electric discharge machine, a correction block is inserted into a corner of a movement path where the wire electrode is moved by the electrode moving device. The correction block does not correspond to the contour of the workpiece to be machined. When it is necessary to change machining condition such as the voltage to be applied to the wire electrode before and after the corner, a changing position to change the machining condition is set on the correction block.

Abstract: An apparatus for adjusting the position of a work mounted on a machine tool. A base is fixed to a work table of the machine tool, and the position of a mounting member is adjusted with respect to the base. The work is mounted on a mounting surface of the mounting member. The positions in the Z-axis direction of central portions of the four sides of the mounting member are adjusted by first driving and fixing members so that a work surface of the work is along an X-Y plane. The position where the mounting member is rotated around the Z-axis is then adjusted by second driving and fixing members arranged in the central portions of the pair of opposite sides of the mounting member so that a plane of the work is parallel to an X-Z plane. Each of the driving and fixing members includes piezoelectric displacement elements for adjusting an amount of displacement in response to an applied voltage so as to fix the mounting member in a state where the amount of displacement is adjusted.

Abstract: A cutting shape (Q1) is approximated to a polygonal shape (Q3). Division points are obtained by dividing line segments linking each vertex of this polygonal shape (Q3) with the cutting start point (PS1) by the same number. Corresponding division points on each line segment are then linked to obtained a plurality of polygonal closed paths (PH2-PH4). Here, the innermost closed path (PH2) is devised such that at least a portion thereof passes outside the cutting starting hole centered on the cutting start point (PS1).