Abstract: To provide an electrode wire for electrical discharge machining including ?-brass and ?-brass arranged on an outer peripheral surface of a core and a method of manufacturing the electrode wire, capable of enhancing wire connection performance and cutting down manufacturing cost while trying to increase a processing speed. The electrode wire for electrical discharge machining according to this invention comprises: an external layer including ?-brass and ?-brass; and a core having an undulating shape formed at a boundary surface with the external layer. The ?-brass and the ?-brass are arranged densely and sparsely at the boundary surface of the undulating shape.

Abstract: An object of the present invention is to accurately position a wire electrode and a work. A control device included in a wire electric discharge machine of the present invention causes, in a state in which movement of the wire electrode in a longitudinal direction is stopped, a capacitance measuring section to measure capacitance while causing a driving section to relatively move a wire electrode and a work, thereafter causes, in a state in which the control device causes a wire moving section to move the wire electrode in the longitudinal direction, the capacitance measuring section to measure the capacitance, and causes the driving section to adjust relative positions of the wire electrode and the work.

Abstract: An artificial sensory epithelium (1) to be embedded in a cochlea (301) of a patient includes a piezoelectric film (2) and multitude microelectrodes (3), (3), . . . arranged on the cochlea. The piezoelectric film is arranged along a basilar membrane (306) in the cochlea. A portion of the piezoelectric film that corresponds to a portion of the basilar membrane that is induced to vibrate by sound waves coming from outside the cochlea vibrates. A microelectrode of the microelectrodes that is arranged on the portion of the piezoelectric film provides electric stimuli to spiral ganglion neurons (311). The artificial sensory epithelium preferably includes a support member (4) configured to support the piezoelectric film and be fixable in the cochlea.

Abstract: A control device for a wire discharge machine including an interpolar average machining voltage detection unit 5 that detects an interpolar average machining voltage between an electrode 3 and a workpiece 4 to be machined, an interpolar average machining voltage correction unit 12 that corrects the interpolar average machining voltage detected by the interpolar average machining voltage detection unit, a set voltage storage unit 6 that stores, in advance, a set voltage serving as a target value of the interpolar average machining voltage, a voltage calculation unit 7 that calculates a difference between the set voltage and an output of the interpolar average machining voltage correction unit 12, a machining speed control unit 8 that calculates a machining speed of the electrode based on the difference calculated by the voltage calculation unit 7, a drive control device 9 that controls a machining speed of the electrode in accordance with the calculated machining speed, a set speed storage unit 10 that sets, i

Abstract: An electric discharge machining apparatus includes a power supply, an electrode gap formed from an electrode and a workpiece, a current limiting resistor connected between the power supply and the electrode gap, switching elements that turns on and off application of a voltage from the power supply to the electrode gap, an inductance element connected in series between the switching elements and the electrode gap, and a control unit that controls the switching elements. The control unit causes the switching elements to perform ON/OFF operations according to a switching pattern having an on-pulse time width (?Ton) in which a voltage of the electrode gap can reach a voltage value of the power supply in an on-pulse time and a pause time width (?Toff) equal to or longer than a time width (?tic) of a discharge current flowing during the capacitor discharge and shorter than a cycle (?Tso) of the self-excited oscillation.

Abstract: The present invention includes drive units 7a and 7b that change a relative position between a wire electrode 12 and a workpiece 14 by moving a position of wire guide 8a and 8b, drive control units 6a and 6b that drive the drive units 7a and 7b based on a machining shape on the workpiece 14, respectively, a correction-amount storage unit 3 that previously stores therein a position correction amount for the wire electrode 12 corresponding to a machining condition, a correction-amount reading unit 4 that reads the position correction amount corresponding to the machining condition from the correction-amount storage unit 3, and a wire-position correction unit 5 that causes the drive control units 6a and 6b to correct a relative distance between the wire electrode 12 and the workpiece 14 based on the read position correction amount.

Abstract: An electric discharge machining apparatus of the present invention includes a power supply, an electrode gap configured so as to be formed by an electrode and a workpiece, and an earth floating-capacitance current-suppressing coil configured to be inserted between the power supply and the electrode gap. Accordingly, the impedance in the charging path from the power supply to an interelectrode capacitance (an interelectrode parallel capacitor and an interelectrode parallel floating capacitance) can be decreased, and the impedance in the charging path to an earth floating capacitance can be increased, thereby enabling the electric current from the earth floating capacitance during discharge machining to be suppressed.

Abstract: The present invention includes a post-cooling temperature sensor that measures a temperature of the machining fluid immediately after being cooled by a cooling device as a post-cooling fluid temperature, and an intra-tank temperature sensor that measures a temperature of the machining fluid in a work tank as an intra-tank fluid temperature, for a cooling control device that controls a fluid temperature of the machining fluid in a wire electric discharge machining apparatus, and the cooling control device has a first temperature-feedback control unit that feeds back the post-cooling fluid temperature into a cooling instruction value as an instruction value for the cooling device, and a second temperature-feedback control unit adjusts the cooling instruction value by feeding back the intra-tank fluid temperature to cause the intra-tank fluid temperature to follow a target temperature.

Abstract: A control device of the wire electric-discharge machining apparatus includes a speed-ratio computing unit that calculates machining speed information related to a corner machining speed in a corner machining portion corresponding to an amount of machining in the corner machining portion, on the basis of NC data, a feedback machining-speed computing unit that calculates, as a feedback machining speed to be used for feedback control of wire electric-discharge machining, a machining speed corresponding to an inter-electrode state between a wire electrode and a workpiece measured during wire electric-discharge machining, and a multiplier that calculates a machining speed to be used for control of a machining device at a time of machining the corner machining portion, on the basis of the machining speed information and the feedback machining speed.

Abstract: The automatic wire-threading device includes a wire feed motor that drives a wire feed roller in a feeding direction, a wire-feed-motor control unit that outputs a feeding-direction rotation-speed reference to the wire feed motor at a time of a threading operation of a wire electrode and that reduces torque in a feeding direction when a detected rotation speed of the wire feed roller is larger than the feeding-direction rotation-speed reference, a wire collecting motor that drives a wire collecting roller in a collecting direction, and a wire-collecting-motor control unit that outputs a predetermined wire-collecting-roller speed reference to the wire collecting motor to collect a wire. The wire-feed-motor control unit limits torque so that an absolute value of motor torque in a winding-back direction of a wire feed roller is smaller than an absolute value of motor torque in a feeding direction.

Abstract: In order to detect a wire breakage as soon as possible, the wire electrical discharge machining apparatus includes a speed fluctuation compensator that generates a speed fluctuation suppression command that is a speed compensation value that suppresses fluctuation of the rotational speed of the tension motor on the basis of the rotational speed of the tension motor and a breakage detecting device that detects a breakage of the wire electrode on the basis of a comparison of a preset breakage detection threshold and a speed fluctuation suppression command output from the speed fluctuation compensator.

Abstract: An immunostimulatory compound is disclosed.

Abstract: The wire electrical discharge machining apparatus includes: a tension control motor controlling tension and feed speed of the wire extending under tension between a tension control roller and a winding roller by controlling the tension control motor; an external force estimator calculating an external force estimate applied to the tension control motor; an external force determiner determining, based on the external force estimate, whether there is a sign indicative of breaking of the wire; a machining power control device controlling a machining power source to reduce electrical discharge machining energy between the wire and a workpiece when determining that there is a sign indicative of breaking of the wire; a motor position detector detecting a rotational position of the tension control motor; and a motor control device controlling the tension control motor on the basis of the rotational position such that the feed speed stays within a predetermined range.

Abstract: An electric discharge machining apparatus includes a power supply, an electrode gap formed from an electrode and a workpiece, a current limiting resistor connected between the power supply and the electrode gap, switching elements that turns on and off application of a voltage from the power supply to the electrode gap, an inductance element connected in series between the switching elements and the electrode gap, and a control unit that controls the switching elements. The control unit causes the switching elements to perform ON/OFF operations according to a switching pattern having an on-pulse time width (?Ton) in which a voltage of the electrode gap can reach a voltage value of the power supply in an on-pulse time and a pause time width (?Toff) equal to or longer than a time width (?tic) of a discharge current flowing during the capacitor discharge and shorter than a cycle (?Tso) of the self-excited oscillation.

Abstract: A wire travelling device including a wire-feed-roller circumferential-speed calculation unit and a wire-collection roller circumferential-speed calculation unit that calculate each circumferential speed of the wire feed roller and the wire collection roller, a circumferential-speed-difference holding unit that calculates a difference between the circumferential speed of the wire feed roller and the circumferential speed of the wire collection roller as a circumferential speed difference and holds therein the calculated circumferential speed difference, and a wire-feed-roller speed control unit and a wire-collection roller speed control unit that control the wire feed roller and the wire collection roller, in changing a traveling speed of the wire, by a wire-feed-roller speed instruction value and a wire-collection roller speed instruction value generated so that the circumferential speed difference before changing the traveling speed of the wire is maintained after the changing.

Abstract: A control device of the wire electric-discharge machining apparatus includes a speed-ratio computing unit that calculates machining speed information related to a corner machining speed in a corner machining portion corresponding to an amount of machining in the corner machining portion, on the basis of NC data, a feedback machining-speed computing unit that calculates, as a feedback machining speed to be used for feedback control of wire electric-discharge machining, a machining speed corresponding to an inter-electrode state between a wire electrode and a workpiece measured during wire electric-discharge machining, and a multiplier that calculates a machining speed to be used for control of a machining device at a time of machining the corner machining portion, on the basis of the machining speed information and the feedback machining speed.

Abstract: An artificial sensory epithelium (1) to be embedded in a cochlea (301) of a patient includes a piezoelectric film (2) and multitude microelectrodes (3), (3), . . . arranged on the cochlea. The piezoelectric film is arranged along a basilar membrane (306) in the cochlea. A portion of the piezoelectric film that corresponds to a portion of the basilar membrane that is induced to vibrate by sound waves coming from outside the cochlea vibrates. A microelectrode of the microelectrodes that is arranged on the portion of the piezoelectric film provides electric stimuli to spiral ganglion neurons (311). The artificial sensory epithelium preferably includes a support member (4) configured to support the piezoelectric film and be fixable in the cochlea.

Abstract: A bridge circuit of an embodiment includes: a command transfer portion which is configured by wired logic into which a host controller capable of sending a command that corresponds to each of a plurality of devices inputs the command, and which is configured to transfer the inputted command to the plurality of devices; a command analysis portion which is configured by wired logic, and which is configured to analyze the command from the host controller; and a response reply portion which is configured by wired logic, and which is capable of reading out a response based on an analysis result of the command analysis portion from a register that holds a response corresponding to the command and sending the response to the host controller.

Abstract: An antitumor agent for combined use of a compound or pharmaceutically acceptable salt thereof represented by Formula (I) and a compound or pharmaceutically acceptable salt thereof represented by Formula (II) exhibits an excellent antitumor effect compared to cases where these are individually used, and exhibits antitumor effects against various cancer types: wherein R1 is azetidinyl and the like, R2 to R5 is a hydrogen atom or a halogen atom, R6 is C3-8 cycloalkyl and the like, R7 is a hydrogen atom and the like, and R8 is a halogen atom and the like.

Abstract: A wire electric discharge machining apparatus according to embodiments includes a wire electrode, a wire supplying unit that supplies the wire electrode, a collecting motor that collects the wire electrode at a predetermined speed, a tension motor that controls a tension of the wire electrode between the wire supplying unit and the collecting motor, a speed calculating unit that calculates a traveling speed of the wire electrode at a predetermined time interval, a speed storing unit that stores the traveling speed calculated by the speed calculating unit, a differential speed calculating unit that calculates a differential speed between a current traveling speed output from the speed calculating unit and a past traveling speed stored in the speed storing unit, and a breakage detecting unit that detects breakage of the wire electrode by comparing the differential speed with a predetermined threshold.