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公开(公告)号：US20180200815A1
公开(公告)日：2018-07-19
申请号：US15869790
申请日：2018-01-12
申请人： FANUC CORPORATION
发明人： Tomoaki Matsunaga
摘要： A wire electrical discharge machine includes: a multiple number of switching elements connected in parallel with each other and configured to supply the machining current to the electrode gap to perform electrical discharge machining; a multiple number of switches each connected in series with the associated one of the multiple switching elements and configured to cut off each of the multiple switching elements; and a control device configured to perform control when at least one of the multiple switching elements fails so as to disconnect the failed switching elements by means of the associated switches and also change the machining conditions in accordance with the number of the failed switching elements.
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公开(公告)号：US09993888B2
公开(公告)日：2018-06-12
申请号：US15058157
申请日：2016-03-02
申请人： FANUC Corporation
发明人： Hirotsugu Kasai , Kaoru Hiraga
摘要： A wire electrical discharge machine recognizes that the finished piece (core) has been separated from the piece of work as a result of electrical discharge machining, allows fluid to be jetted against the finished piece (core) from the lower nozzle so that the finished piece (core) floats upward, recognizes that the finished piece (core) has floated upward by a predetermined amount on the basis of the completion of the process program or the information gained from the sensor, and allows the core removal unit to catch the finished piece (core) for removal and collection after it has been recognized that the finished piece (core) has floated upward by the predetermined amount.
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公开(公告)号：US09950378B2
公开(公告)日：2018-04-24
申请号：US15088186
申请日：2016-04-01
申请人： FANUC Corporation
摘要： In a wire electric discharge machine, a discharge delay time is used to classify the inter-electrode state into three categories; a short-circuit state, small-gap state, and large-gap state. Based on this classification, the magnitude of a machining current supplied from a main discharge circuit is determined. If the discharge delay time is zero (i.e., if no electric discharge is generated) after the lapse of a predetermined time since the start of the application of a machining voltage to an inter-electrode gap by an auxiliary discharge circuit, the inter-electrode gap is determined to be short-circuited by machining chips. Thereupon, a short-circuit machining current is supplied from the main discharge circuit to the inter-electrode gap to remove the machining chips. In this way, establishment of a complete short-circuit state is prevented so that the machining efficiency is improved to increase the machining speed.
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4.发明申请公开(公告)号：US20180104756A1
公开(公告)日：2018-04-19
申请号：US15714104
申请日：2017-09-25
发明人： Wansheng ZHAO , Lin Gu , Jipeng Chen
IPC分类号： B23H9/14 , B23H1/02 , B23H1/04 , B23H7/26 , G05B19/416
摘要： A machining method for three-dimensional open flow channel using high-speed arc discharge layered sweep, which arranges an axial line of an installation shaft of a tool electrode with six degrees of freedom to be perpendicular to an axial line of a to-be machined work piece in an arc discharge process, with the tool electrode sweeping in a closed path in a plane or a curved surface perpendicular to the installation shaft, wherein the path of the sweeping satisfies: a space of an enveloped space being formed by the tool electrode moving in the path and being coincident with a removed portion of the work piece does not exceed a preset machined cavity of the flow channel. The present invention is based on high-speed arc discharge of hydrodynamic arc breaking and realized layered milling and surface machining for three-dimensional open flow channels.
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公开(公告)号：US20180088543A1
公开(公告)日：2018-03-29
申请号：US15577184
申请日：2015-05-29
发明人： Tadahiro NAKAMURA , Yayoi ONO
CPC分类号： G05B13/026 , B23H1/02 , B23H7/02 , B23H7/04 , B23H7/20 , G05B2219/31407 , G05B2219/45043
摘要： A machining time-estimating method for a wire electrical discharge machine for estimating the remaining machining time (Tr) during the machining of a workpiece comprises: a step for setting a predicted machining velocity; a step for determining the actual machining velocity; a step for determining an estimated machining velocity so as to incorporate the predicted machining velocity and the actual machining velocity at a specified ratio, that is, a reference ratio; and a step for calculating remaining machining time from the estimated machining velocity. By executing the actual machining velocity-determining step to the remaining machining time-calculating step repeatedly to estimate remaining machining time moment by moment, remaining wire electrical discharge machining time is estimated with reduced error.
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公开(公告)号：US20180036815A1
公开(公告)日：2018-02-08
申请号：US15667080
申请日：2017-08-02
申请人： FANUC CORPORATION
摘要： An electrical discharge machine includes: a work tank to store the working fluid in order to perform electrical discharge machining; a sound collector to collect sound generated by electrical discharge machining and transmitted through the working fluid stored in the work tank; and a controller to perform a predetermined operation based on sound information collected by the sound collector.
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公开(公告)号：US09878385B2
公开(公告)日：2018-01-30
申请号：US15033677
申请日：2013-12-19
发明人： Takashi Hashimoto , Takashi Yuzawa
CPC分类号： B23H1/02 , B23H1/026 , B23H7/02 , B23H7/20 , G05B2219/45043
摘要： A wire electric discharge machining apparatus includes a machining unit that forms a product part by cutting off an outer frame portion from a workpiece and a control device that controls the machining unit. The machining unit machines a first boundary region in a boundary between a member to be the outer frame portion and a member to be the product part to leave an uncut portion, cuts off the product part from the outer frame portion by machining a second boundary region, which is the uncut portion, and repeats machining for the first/second boundary regions. The uncut portion has a side crossing a machining direction in machining the second boundary region, and when machining the second boundary region, the control device controls the machining unit to start the machining from the crossing side.
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公开(公告)号：US09796026B2
公开(公告)日：2017-10-24
申请号：US14744229
申请日：2015-06-19
申请人： FANUC Corporation
发明人： Kaoru Hiraga , Masanobu Takemoto
CPC分类号： B23C3/30 , B23H1/02 , B23H7/06 , B23H7/20 , B23H9/00 , B23H2500/20 , G05B2219/37444 , G05B2219/37452 , G05B2219/45043 , G05B2219/45221
摘要： A machining program creating device for a wire electric discharge machine creates a machining program for machining a keyway on the side surface of a round hole in a workpiece, based on a previously specified diameter of the round hole, a center position of the round hole measured by bringing a wire electrode into contact with the workpiece, and a previously defined shape of the keyway.
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公开(公告)号：US20170229357A1
公开(公告)日：2017-08-10
申请号：US15449377
申请日：2017-03-03
申请人： Kangmin Hsia
发明人： Kangmin Hsia
IPC分类号： H01L21/66 , B23H7/28 , H01L21/321 , B23H1/04 , H01L21/3105 , B23H1/02 , B23H9/02
CPC分类号： H01L22/20 , B23H1/02 , B23H1/028 , B23H1/04 , B23H1/08 , B23H3/00 , B23H7/28 , B23H7/32 , B23H9/00 , B23H9/02 , B24B19/22 , H01L21/306 , H01L21/3065 , H01L21/31053 , H01L21/32115 , H01L21/3212 , H01L22/12
摘要： A method of polishing a surface of an object disposed within a gas chamber is provided. The method includes filling the gas chamber with a discharging medium to a predefined pressure, applying a voltage between an electrode and the surface, calibrating a height of the electrode relative to the surface so as to establish electrical breakdown threshold criteria, and scanning the electrode with respect to the surface so as to sequentially position the electrode over a plurality of locations on the surface, each location characterized by a surface error. When a respective location in the plurality of locations has a surface error that meets the electrical breakdown threshold criteria, electrical breakdown occurs, whereby the electrical breakdown results in a discharging pulse that polishes the surface.
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公开(公告)号：US20170197266A1
公开(公告)日：2017-07-13
申请号：US15320666
申请日：2015-08-14
发明人： BISHENG ZHOU
摘要： A portable movable discharge processing system by short electric arc, comprising a power supply cooling water tank (1), a short electric arc cutting power supply (2), a ring current device (16), a feeding mechanism (17), a hanging bracket and a pneumatic ring current tool (35) mounted on the hanging bracket, which are successively and cooperatively mounted on a horizontal plane; an air compressor (22) and a sewage pump (26), which are successively connected to the feeding mechanism; a self-priming pump (3) and a movable short-electric arc cutting device control cabinet (4), which are successively connected to the air compressor; an anode device (15) which is connected to the movable short-electric arc cutting device control cabinet (4) through an anode cable (6); a cathode device which is connected to the movable short-electric arc cutting device control cabinet (4) through a cathode cable (5); and a water pump which is connected to the anode device through a pipeline. The discharge processing system is convenient to use, low in labor intensity and good in safety.
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