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公开(公告)号：US10220458B2
公开(公告)日：2019-03-05
申请号：US14694501
申请日：2015-04-23
申请人： FANUC Corporation
发明人： Yasuo Nakashima , Akiyoshi Kawahara
摘要： A machining power supply device for an electric discharge machine performs control to turn on a first semiconductor switching element, which is arranged in series between a DC power supply and a capacitor connected in parallel with a machining gap between an electrode and a workpiece, to charge the capacitor, and turn on a second semiconductor switching element, which is arranged in parallel with the capacitor and connected to a rectifier element, within a period in which the first semiconductor switching element is off.
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2.发明授权Contact detection apparatus for wire electrical discharge machine with capability to vary applied gap voltage 有权用于电线放电机的接触检测装置，具有改变施加间隙电压的能力公开(公告)号：US09314859B2
公开(公告)日：2016-04-19
申请号：US13780813
申请日：2013-02-28
申请人： FANUC CORPORATION
CPC分类号： B23H1/02 , B23H7/04 , B23H7/18 , B23H2500/20
摘要： A contact detection apparatus for a wire electrical discharge machine includes a voltage application unit adapted to apply a detection voltage to detect contact between a wire electrode and a workpiece; a contact determination unit adapted to determine contact or non-contact between the wire electrode and the workpiece based on changes in the detection voltage applied by the voltage application unit; and a voltage value changing unit adapted to change a voltage value of the detection voltage applied by the voltage application unit.
摘要翻译： 一种用于线放电机的接触检测装置包括：电压施加单元，适于施加检测电压以检测线电极和工件之间的接触; 接触确定单元，其适于基于由所述电压施加单元施加的检测电压的变化来确定所述线电极和所述工件之间的接触或非接触; 以及电压值改变单元，其适于改变由所述电压施加单元施加的检测电压的电压值。
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公开(公告)号：US10751820B2
公开(公告)日：2020-08-25
申请号：US15394943
申请日：2016-12-30
申请人： FANUC Corporation
摘要： A wire electrical discharge machine is configured to perform removal machining of a workpiece by applying a voltage to a machining gap between a wire electrode and the workpiece through a feeder to generate electrical discharge and is provided with a feeder deterioration detection unit configured to detect deterioration of the feeder. The feeder deterioration detection unit includes a detection unit configured to detect a machining current value during the machining and a detection unit configured to detect the number of electrical discharges during the machining.
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公开(公告)号：US10376975B2
公开(公告)日：2019-08-13
申请号：US14979500
申请日：2015-12-27
申请人： FANUC Corporation
摘要： A wire electric discharge machine with tension monitoring function comprising a tension generation unit configured to generate tension in the wire electrode, a first tension measurement unit set on the wire electrode and configured to measure tension, and a tension control unit configured to feedback tension value measured by the first tension measurement unit and output tension command value to the tension generation unit such that the tension value is equal to a target value, wherein a warning signal is configured to be generated when the tension command value output by the tension control unit is not within a set range corresponding to the target value of the tension.
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公开(公告)号：US10265790B2
公开(公告)日：2019-04-23
申请号：US15058156
申请日：2016-03-02
申请人： FANUC Corporation
IPC分类号： B23H1/10 , B23H1/00 , B23H11/00 , B25J9/16 , B25J11/00 , G06T7/00 , G01N21/94 , B08B3/02 , B08B9/00 , B08B9/093 , B23H7/02 , G01N21/90
摘要： In order to prevent a reduction in the rate of operation and malfunction due to dirt in a machining tank, a wire electric discharge machine configured to perform electric discharge machining in the machining tank is provided with a camera for capturing an image of the inside of the machining tank and determining unit for detecting dirt in the machining tank based on the image captured by the camera. The dirt in the machining tank is detected by the determining unit.
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6.发明申请公开(公告)号：US20180369943A1
公开(公告)日：2018-12-27
申请号：US16010938
申请日：2018-06-18
申请人： FANUC CORPORATION
发明人： Masashi Masuda , Akiyoshi Kawahara
摘要： A wire electrical discharge machining system includes: an electrode motion control unit for moving a wire electrode while keeping the wire electrode parallel to Z1-axis and bring the wire electrode into contact with a reference piece, and moving the wire electrode while keeping the wire electrode inclined with respect to the Z1-axis and bring the wire electrode into contact with the reference piece; an electrode position acquiring unit for acquiring a position of the wire electrode in an X1Y1Z1 orthogonal coordinate system when the wire electrode touches the reference piece; a piece position acquiring unit for acquiring a piece position of the reference piece in an X2Y2Z2 orthogonal coordinate system when the wire electrode touches the reference piece; and a relative positional relationship calculator for calculating a coordinate system relative positional relationship, based on the acquired positions.
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公开(公告)号：US10086458B2
公开(公告)日：2018-10-02
申请号：US15083556
申请日：2016-03-29
申请人： FANUC Corporation
发明人： Yasuo Nakashima , Akiyoshi Kawahara
摘要： The upper limit value for the axis feeding speed is set to the maximum speed that can secure the safety in a wire electrical discharge machine. In the case where the level of the process liquid is higher than a predetermined height, however, the upper limit value is made smaller. In order to prevent the process liquid from spilling to the outside of the process tank, the acceleration or the jerk may be changed instead of the axis feeding speed. In the case where the process liquid level is high, it is difficult for the process liquid to spill when the speed is adjusted slowly. In addition, the time constant may be increased or the instruction for speed may be changed from the linear type to the S shape type.
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8.发明授权公开(公告)号：US10512980B2
公开(公告)日：2019-12-24
申请号：US16010938
申请日：2018-06-18
申请人： FANUC CORPORATION
发明人： Masashi Masuda , Akiyoshi Kawahara
IPC分类号： B23H7/20 , B25J9/16 , G05B19/418 , B23H7/06 , B23H7/26
摘要： A wire electrical discharge machining system includes: an electrode motion control unit for moving a wire electrode while keeping the wire electrode parallel to Z1-axis and bring the wire electrode into contact with a reference piece, and moving the wire electrode while keeping the wire electrode inclined with respect to the Z1-axis and bring the wire electrode into contact with the reference piece; an electrode position acquiring unit for acquiring a position of the wire electrode in an X1Y1Z1 orthogonal coordinate system when the wire electrode touches the reference piece; a piece position acquiring unit for acquiring a piece position of the reference piece in an X2Y2Z2 orthogonal coordinate system when the wire electrode touches the reference piece; and a relative positional relationship calculator for calculating a coordinate system relative positional relationship, based on the acquired positions.
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公开(公告)号：US09744608B2
公开(公告)日：2017-08-29
申请号：US14584502
申请日：2014-12-29
申请人： FANUC Corporation
CPC分类号： B23H1/022 , B23H7/02 , B23H7/04 , B23H2600/12
摘要： A primary power supply charges a capacitor by turning on a switching element and, upon completion of charging, turns off the switching element. Then, an AC pulse voltage is applied to the gap between a wire electrode and a workpiece by alternately turning on and off a switching element present in a secondary power supply. After a dielectric breakdown occurs between the wire electrode and the workpiece, the switching element is turned on to connect the capacitor so that the capacitor supplies a pulse current for machining.
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10.发明授权公开(公告)号：US09459611B2
公开(公告)日：2016-10-04
申请号：US14079122
申请日：2013-11-13
申请人： FANUC CORPORATION
摘要： A wire electric discharge machine is configured to machine a workpiece by computing an electric current at the machining time before starting a main machining and compensating a power source voltage for machining. The wire electric discharge machine measures an average electric current and an electric discharge frequency at the machining time, in a measuring section in an approach before the main machining, and computes a peak current at the machining time. Further, an electric voltage of a machining power source is compensated by comparing the computed peak current at the machining, with a reference peak current.
摘要翻译： 电火花线切割机被配置为通过在开始主加工之前的加工时间计算电流并补偿用于加工的电源电压来加工工件。 线材放电机在主加工前的测量部中测量加工时的平均电流和放电频率，并计算加工时间的峰值电流。 此外，通过将计算出的加工峰值电流与参考峰值电流进行比较来补偿加工电源的电压。
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