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公开(公告)号：US10543546B2
公开(公告)日：2020-01-28
申请号：US15723156
申请日：2017-10-02
申请人： FANUC Corporation
发明人： Tomoyuki Furuta
摘要： In a wire electric discharge machine, time from application of a voltage to a machining gap between a workpiece and a wire electrode until occurrence of electric discharge is measured as a discharge delay time, and the measured discharge delay time is integrated over a predetermined measurement period to calculate a discharge delay integrated time. Further, the number of times of the voltage application in the measurement period is counted. An average discharge delay time per voltage application in the measurement period is calculated from the discharge delay integrated time and the number of times of voltage application. The movement of the wire electrode with respect to the workpiece is controlled on the basis of the average discharge delay time.
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公开(公告)号：US20190228881A1
公开(公告)日：2019-07-25
申请号：US16250319
申请日：2019-01-17
申请人： FANUC CORPORATION
发明人： Tomoyuki Furuta
摘要： A cable includes: a linear conductor; a plurality of resin hollow tubes which are disposed around the conductor so that an air layer is formed around the conductor and which extend in a longitudinal direction of the conductor; and an insulating protective member configured to protect the conductor and the plurality of hollow tubes.
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3.发明授权Wire electric discharge machine capable of detecting machining state and determining average voltage in machining gap 有权能够检测加工状态并确定加工间隙中的平均电压的线放电机公开(公告)号：US08735762B2
公开(公告)日：2014-05-27
申请号：US13680392
申请日：2012-11-19
申请人： Fanuc Corporation
发明人： Masao Murai , Tomoyuki Furuta
摘要： In order to detect a machining state of a wire electric discharge machine, the state of a machining gap is classified into three categories; an open-circuit state in which electric discharge does not occur after a first predetermined level is reached or surpassed by a machining-gap voltage, an electric discharge state in which electric discharge occurs after a second predetermined level is reached or surpassed by the machining-gap voltage, whereby the machining-gap voltage becomes lower than the second predetermined level, and a short-circuit state wherein a third predetermined level is not reached or surpassed by the machining-gap voltage. An average voltage in the machining gap is determined based on voltages in these states and the number of cycles of voltage application to the machining gap, number of open-circuits, number of discharges, and number of short-circuits per unit time.
摘要翻译： 为了检测电火花线切割机的加工状态，将加工间隙的状态分为三类， 在通过加工间隙电压达到或超过第一预定电平之后不发生放电的开路状态，在第二预定电平达到或超过加工间隙电压之后发生放电的放电状态， 间隙电压，由此加工间隙电压变得低于第二预定电平，以及短路状态，其中第三预定电平未达到或超过加工间隙电压。 基于这些状态下的电压和对加工间隙的施加电压的次数，开路次数，放电次数以及每单位时间的短路次数，确定加工间隙中的平均电压。
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公开(公告)号：US11666978B2
公开(公告)日：2023-06-06
申请号：US17011107
申请日：2020-09-03
申请人： FANUC CORPORATION
发明人： Tomoyuki Furuta , Yasuo Nakashima
CPC分类号： B23H1/024 , B23H7/20 , B23H2600/10
摘要： A wire electrical discharge machine includes: a voltage application unit for repeatedly applying a voltage to an electrode gap between the workpiece and the wire electrode at a predetermined cycle; a switching element connected in parallel with the electrode gap and configured to short-circuit the electrode gap; and a control section for controlling the switching element so as to short-circuit the electrode gap in a pause period during which the voltage is not applied. The control section adjusts a short-circuiting period in which the electrode gap is short-circuited according to the machining shape specified by a machining program.
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公开(公告)号：US11135668B2
公开(公告)日：2021-10-05
申请号：US15689432
申请日：2017-08-29
申请人： FANUC CORPORATION
发明人： Tomoyuki Furuta , Tomoaki Matsunaga
摘要： A wire electrical discharge machine includes a first voltage applying circuit, a second voltage applying circuit, and a switch controller. The first voltage applying circuit includes a first DC power source for applying a positive polarity voltage across an electrode gap, and a first switch for on/off-switching of application of the positive polarity voltage. The second voltage applying circuit includes a second DC power source for applying a reverse polarity voltage to the electrode gap, and a second switch for on/off-switching of application of the reverse polarity voltage. The switch controller controls the first switch and the second switch so that the first switch and the second switch are not turned on simultaneously. The first DC power source and the second DC power source are set up so that the absolute value of the reverse polarity voltage is lower than the absolute value of the positive polarity voltage.
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公开(公告)号：US20180056421A1
公开(公告)日：2018-03-01
申请号：US15689432
申请日：2017-08-29
申请人： FANUC CORPORATION
发明人： Tomoyuki Furuta , Tomoaki Matsunaga
CPC分类号： B23H7/30 , B23H1/022 , B23H1/024 , B23H1/028 , B23H1/04 , B23H7/04 , B23H7/065 , B23H7/10 , B23H7/20 , B23H2300/20
摘要： A wire electrical discharge machine includes a first voltage applying circuit, a second voltage applying circuit, and a switch controller. The first voltage applying circuit includes a first DC power source for applying a positive polarity voltage across an electrode gap, and a first switch for on/off-switching of application of the positive polarity voltage. The second voltage applying circuit includes a second DC power source for applying a reverse polarity voltage to the electrode gap, and a second switch for on/off-switching of application of the reverse polarity voltage. The switch controller controls the first switch and the second switch so that the first switch and the second switch are not turned on simultaneously. The first DC power source and the second DC power source are set up so that the absolute value of the reverse polarity voltage is lower than the absolute value of the positive polarity voltage.
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公开(公告)号：US20170239741A1
公开(公告)日：2017-08-24
申请号：US15437750
申请日：2017-02-21
申请人： FANUC CORPORATION
发明人： Tomoyuki Furuta
摘要： A dielectric working fluid centralized management system is equipped with a dielectric working fluid adjustment apparatus for adjusting the fluid quality of a dielectric working fluid of a plurality of wire electrical discharge machines, a dielectric working fluid delivery and reception control member for controlling delivery and reception of the dielectric working fluid between a plurality of dielectric working fluid storage tanks disposed corresponding respectively to the plurality of wire electrical discharge machines, and in which the dielectric working fluid is stored, and the dielectric working fluid adjustment apparatus, and a dielectric working fluid quality controller, which receives dielectric working fluid information from the plurality of wire electrical discharge machines and controls the dielectric working fluid delivery and reception control member, or both the dielectric working fluid delivery and reception control member and the dielectric working fluid adjustment apparatus.
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公开(公告)号：US10784019B2
公开(公告)日：2020-09-22
申请号：US16250319
申请日：2019-01-17
申请人： FANUC CORPORATION
发明人： Tomoyuki Furuta
摘要： A cable includes: a linear conductor; a plurality of resin hollow tubes which are disposed around the conductor so that an air layer is formed around the conductor and which extend in a longitudinal direction of the conductor; and an insulating protective member configured to protect the conductor and the plurality of hollow tubes.
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公开(公告)号：US10580553B2
公开(公告)日：2020-03-03
申请号：US16249994
申请日：2019-01-17
申请人： FANUC CORPORATION
发明人： Tomoyuki Furuta
摘要： A cable includes: a linear conductor; a plurality of resin hollow tubes which are disposed around the conductor so that an air layer is formed around the conductor and which extend in a longitudinal direction of the conductor; an insulating protective member configured to protect the conductor and the plurality of hollow tube; and a partitioning portion provided in at least one hollow tube among the plurality of hollow tubes, the partitioning portion being configured to partition an interior of the hollow tube.
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公开(公告)号：US09486869B2
公开(公告)日：2016-11-08
申请号：US14139264
申请日：2013-12-23
申请人： FANUC CORPORATION
发明人： Masao Murai , Tomoyuki Furuta
摘要： In a power supply device for electric discharge machining, the polarity of the voltage to be applied is determined on the basis of a result of determination whether the machining gap is in open state or not, an average value of voltages applied across the machining gap voltage during machining, and the number of successive open states with the same polarity. This eliminates the need to significantly vary the voltages to be applied from positive to negative and from negative to positive, thereby reducing the output energy required by the machining power supply.
摘要翻译： 在放电加工用电源装置中，根据判断加工间隙是否处于开放状态的结果，确定施加电压的极性，加工间隙电压施加的电压的平均值 在加工期间，以及具有相同极性的连续打开状态的数量。 这样就不需要显着地改变从正负极到负极之间施加的电压，从而降低加工电源所需的输出能量。
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