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公开(公告)号：US08648275B2
公开(公告)日：2014-02-11
申请号：US13128597
申请日：2010-02-26
IPC分类号： B23H1/02
CPC分类号： B23H1/022 , B23H2300/20 , B23H2600/12
摘要： A power supply device comprises a DC power supply (12), a current sensor (14) for detecting gap current (Igap) flowing through the machining gap, a first switching element (16) connected in series between the DC power supply and the tool electrode (2), a first reverse current prevention diode (22) connected in parallel with the DC power supply and connected in series with the first switching element (16), a second switching element (18) connected in series between the DC power supply and the workpiece (3), a second reverse current prevention diode (24) connected in parallel with the DC power supply and connected in series with the second switching element (18), and a pulse controller (20) for controlling the first and second switching elements in response to gap current (Igap). From a first time (t1) when electric discharge is generated across the machining gap, until a second time (t2) when the gap current reaches the peak current during the ON time, both of the first and second switching elements are on. At the second time (t2) only one of the first and second switching elements is turned off.
摘要翻译： 电源装置包括直流电源（12），用于检测流过加工间隙的间隙电流（Igap）的电流传感器（14），串联连接在直流电源和工具之间的第一开关元件（16） 电极（2），与直流电源并联连接并与第一开关元件（16）串联连接的第一反向电流防止二极管（22），串联连接在直流电源 和工件（3），与直流电源并联连接并与第二开关元件（18）串联连接的第二反向电流防止二极管（24），以及用于控制第一和第二 开关元件响应间隙电流（Igap）。 当在加工间隙中产生放电的第一次（t1）时，直到在导通时间期间间隙电流达到峰值电流的第二时间（t2）时，第一和第二开关元件都导通。 在第二时间（t2），第一和第二开关元件中只有一个被关断。
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62.发明申请公开(公告)号：US20130292360A1
公开(公告)日：2013-11-07
申请号：US13980466
申请日：2011-04-12
申请人： Masahiro Okane , Satoshi Suzuki , Kiyohito Oda
发明人： Masahiro Okane , Satoshi Suzuki , Kiyohito Oda
IPC分类号： B23H1/02
CPC分类号： B23H1/022 , B23H2300/20
摘要： The present invention is equipped with a series circuit that includes a DC power supply, switching elements and a diode for supplying DC or AC current pulses to a machining gap between a machining electrode and a workpiece, diodes that regulate a direction of the current flow to one direction, and a control unit that controls the switching elements. When the control unit generates a current pulse having a triangular waveform by an inductance that is present in the series circuit, the control unit controls the switching elements in order that a current-pulse time ratio that is a ratio between the non-current time and the current continuation time in the current pulse is equal to or lower than ⅕.
摘要翻译： 本发明装备有串联电路，该串联电路包括直流电源，开关元件和用于向加工电极和工件之间的加工间隙提供直流或交流电流脉冲的二极管，调整电流方向的二极管 一个方向，以及控制开关元件的控制单元。 当控制单元通过存在于串联电路中的电感产生具有三角波形的电流脉冲时，控制单元控制开关元件，以便将电流脉冲时间比作为非当前时间和非当前时间之间的比率 电流脉冲当前的持续时间等于或小于1/5。
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公开(公告)号：US08093526B2
公开(公告)日：2012-01-10
申请号：US12374956
申请日：2006-10-24
CPC分类号： B23H7/04 , B23H1/022 , B23H7/14 , B23H2300/20
摘要： A wire electric discharge machine includes a wire electrode; a machining power supply that supplies a machining current to between the wire electrode and a workpiece. The machine further includes a first power feed contact and a second power feed contact that respectively feed power to the wire electrode; a first machining-current loop in which a first machining current flows from the first power feed contact toward the workpiece; a second machining-current loop in which a second machining current flow from the second power feed contact toward the workpiece; an impedance switching circuit that is provided in at least any one of the first machining-current loop and the second machining-current loop; and a control unit that controls a flow ratio of the first machining current and the second machining current by changing an impedance of the impedance switching circuit.
摘要翻译： 线放电机包括线电极; 加工电源，其向线电极和工件之间提供加工电流。 该机器还包括分别向线电极供电的第一供电触点和第二供电触点; 第一加工电流回路，其中第一加工电流从第一供电触头朝向工件流动; 第二加工电流回路，其中第二加工电流从所述第二供电触头流向所述工件; 阻抗切换电路，其设置在所述第一加工电流回路和所述第二加工电流回路中的至少任一个中; 以及控制单元，其通过改变阻抗切换电路的阻抗来控制第一加工电流和第二加工电流的流量比。
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公开(公告)号：US07608795B2
公开(公告)日：2009-10-27
申请号：US10551688
申请日：2004-04-30
CPC分类号： B23H7/04 , B23H1/022 , B23H2300/20 , B23H2300/22
摘要： The electrical discharge machining device comprises a first voltage/current source (U1) for discharge initiation connected to the tool electrode (F) and a workpiece electrode (P) forming the poles of a machining gap (G) and a second voltage/current source (U2) that can be disconnected by way of two switches (SW1, SW2). Capacitive elements (C1, C5) are mounted in series in the lines (10, 11) connecting the first source to the poles of the machining gap (G). In addition, these poles can be connected by a self-induction coil (Lm) mounted in series with an adjustable DC source (Sm). Thanks to these features, the energy of the eroding discharges can be significantly reduced in order to obtain a superfine surface finishing process of high quality, while at the same time precisely controlling the mean voltage across the terminals of the machining gap.
摘要翻译： 放电加工装置包括用于与工具电极（F）连接的用于放电起始的第一电压/电流源（U1）和形成加工间隙（G）的极的工件电极（P）和第二电压/电流源 （U2），可以通过两个开关（SW1，SW2）断开。 将电容元件（C1，C5）串联安装在将第一源极连接到加工间隙（G）的极的线（10,11）中。 此外，这些极可以通过与可调直流电源（Sm）串联安装的自感式线圈（Lm）连接。 由于这些特征，可以显着降低侵蚀放电的能量，以获得高质量的超细表面精加工，同时精确地控制加工间隙的端子两端的平均电压。
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公开(公告)号：US07268314B2
公开(公告)日：2007-09-11
申请号：US10520658
申请日：2002-07-12
申请人： Seiji Satou , Hiroyuki Ooguro
发明人： Seiji Satou , Hiroyuki Ooguro
CPC分类号： B23H1/022 , B23H2300/20
摘要： A power supply device for electric discharge machining includes a switching circuit that supplies a discharge pulse current to an inter-electrode portion that is a portion between an electrode and a workpiece serving as another electrode arranged to be opposed to the electrode at a predetermined interval; and a pulse-width control unit that generates a control pulse signal of a predetermined pulse width in response to a detection signal for starting a discharge at the inter-electrode portion. The switching circuit includes a switching circuit including a switching element suitable for a high-speed operation and a switching circuit including a switching element suitable for a low-speed operation, and receives the control pulse signal in parallel.
摘要翻译： 用于放电加工的电源装置包括：切换电路，其以预定间隔向作为与电极相对布置的另一电极的电极和工件之间的部分的电极间部分提供放电脉冲电流; 以及脉冲宽度控制单元，其响应用于在所述电极间部分开始放电的检测信号，生成预定脉冲宽度的控制脉冲信号。 开关电路包括：开关电路，包括适合于高速运行的开关元件和包括适合于低速工作的开关元件的开关电路，并且并行地接收控制脉冲信号。
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公开(公告)号：US20070163999A1
公开(公告)日：2007-07-19
申请号：US10551688
申请日：2004-04-30
IPC分类号： B23H7/04
CPC分类号： B23H7/04 , B23H1/022 , B23H2300/20 , B23H2300/22
摘要： The electrical discharge machining device comprises a first voltage/current source (U1) for discharge initiation connected to the tool electrode (F) and a workpiece electrode (P) forming the poles of a machining gap (G) and a second voltage/current source (U2) that can be disconnected by way of two switches (SW1, SW2). Capacitive elements (C1, C5) are mounted in series in the lines (10, 11) connecting the first source to the poles of the machining gap (G). In addition, these poles can be connected by a self-induction coil (Lm) mounted in series with an adjustable DC source (Sm). Thanks to these features, the energy of the eroding discharges can be significantly reduced in order to obtain a superfine surface finishing process of high quality, while at the same time precisely controlling the mean voltage across the terminals of the machining gap.
摘要翻译： 放电加工装置包括用于与工具电极（F）连接的用于放电起始的第一电压/电流源（U 1）和形成加工间隙（G）的极的工件电极（P）和第二电压/电流 源（U 2），可通过两个开关（SW 1，SW 2）断开。 将电容元件（C 1，C 5）串联安装在将第一源极连接到加工间隙（G）的极的线（10,11）中。 此外，这些极可以通过与可调直流电源（Sm）串联安装的自感式线圈（Lm）连接。 由于这些特征，可以显着降低侵蚀放电的能量，以获得高质量的超细表面精加工，同时精确地控制加工间隙的端子两端的平均电压。
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公开(公告)号：US20050194947A1
公开(公告)日：2005-09-08
申请号：US11068845
申请日：2005-03-02
申请人： Masao Murai , Akiyoshi Kawahara
发明人： Masao Murai , Akiyoshi Kawahara
CPC分类号： B23H1/022 , B23H7/04 , B23H2300/20
摘要： An electric-discharge-machining power supply device in which energy loss is hardly produced and a charge voltage of a capacitor is easily controlled. When a switching element SW1 is turned on, a capacitor C is charged via an inductor L. When the voltage Vc of the charged capacitor exceeds the voltage of direct-current power source E, a current is returned to the power source E via a diode D2. When the switching element SW1 is turned off, energy stored in the inductor L flows from the inductor L through the diode D2, the power source E and the diode D1, so that the voltage Vc of the capacitor C is kept at the power source voltage. When a switching element SW2 is turned on, the voltage of the capacitor is applied between an electrode and a workpiece. Since the charging circuit does not include a resistor and energy stored in the inductor L is returned to the direct-current power source E, no energy loss is produced. Further, the voltage Vc of the charged capacitor C can be controlled by adjusting the power source voltage.
摘要翻译： 能够容易地控制能量损失几乎不产生并且电容器的充电电压的放电加工电源装置。 当开关元件SW1导通时，经由电感器L对电容器C充电。当充电电容器的电压Vc超过直流电源E的电压时，电流经由 二极管D 2。 当开关元件SW 1截止时，存储在电感器L中的能量从电感器L流过二极管D 2，电源E和二极管D1，使得电容器C的电压Vc保持在 电源电压。 当开关元件SW 2导通时，电容器的电压被施加在电极和工件之间。 由于充电电路不包括电阻器，所以存储在电感器L中的能量返回到直流电源E，不会产生能量损失。 此外，可以通过调节电源电压来控制充电电容器C的电压Vc。
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68.发明授权公开(公告)号：US06630641B2
公开(公告)日：2003-10-07
申请号：US09848344
申请日：2001-05-04
IPC分类号： B23H102
CPC分类号： B23H1/022 , B23H2300/20
摘要： An electric discharge machining apparatus includes a wire electrode for machining a workpiece, and a first voltage applying unit for applying a voltage pulse. The voltage pulse has a rise time longer than a discharge formative time lag when a rectangular voltage pulse is applied, when a distance between the workpiece and the wire is an average value in machining, and rises to the same voltage as the rectangular voltage pulse.
摘要翻译： 放电加工装置包括用于加工工件的线电极和用于施加电压脉冲的第一施加电压单元。 当施加矩形电压脉冲时，当工件和线之间的距离是加工中的平均值时，电压脉冲具有比放电形成时滞更长的上升时间，并且上升到与矩形电压脉冲相同的电压。
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公开(公告)号：US20020060205A1
公开(公告)日：2002-05-23
申请号：US09848344
申请日：2001-05-04
IPC分类号： B23H001/02
CPC分类号： B23H1/022 , B23H2300/20
摘要： The electric discharge machining apparatus comprises a wire electrode for machining a workpiece, and a first voltage applying unit for applying a voltage pulse. The voltage pulse is such that it has a rise time longer than a discharge formative time lag when a rectangular voltage pulse is applied when a distance between the workpiece and the wire is an average value in machining and rises up to the same voltage value as the rectangular voltage pulse.
摘要翻译： 放电加工装置包括用于加工工件的线电极和用于施加电压脉冲的第一施加电压单元。 电压脉冲使得当施加矩形电压脉冲时，当工件和线之间的距离是加工中的平均值时，电压脉冲具有比放电形成时间延迟的上升时间，并且上升到与电压值相同的电压值 矩形电压脉冲。
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公开(公告)号：US6107593A
公开(公告)日：2000-08-22
申请号：US216611
申请日：1998-12-21
申请人： Cheng-Fu Tsai , Hsi-Pin Li , Jui-Fang Liang , Hsiang-Kuo Li
发明人： Cheng-Fu Tsai , Hsi-Pin Li , Jui-Fang Liang , Hsiang-Kuo Li
CPC分类号： B23H1/022 , B23H2300/20
摘要： A wire electric-discharge machining apparatus with recycled electric power is provided, which can recycle the energy stored in the inductor of the discharge circuit to be used as the power source to both the ignition circuit and the discharging circuit, so that the use of electric power is more cost-effective. The wire electric-discharge machining apparatus is of the type having a positive-voltage ignition circuit, a negative-voltage ignition circuit, a discharging circuit, and a snubber circuit. The improvement to the wire electric-discharge machining apparatus comprises: a first voltage converting circuit coupled between the snubber circuit and the positive-voltage ignition circuit; a second voltage converting circuit coupled between the snubber circuit and the negative-voltage ignition circuit; and a third voltage converting circuit coupled between the snubber circuit and the discharging circuit. This foregoing wire electric-discharge machining apparatus is capable of recycling the excessive energy that is intended to be drained out in the prior art into reused power to the ignition circuit and discharging circuit. As a result, the wire electric-discharge machining apparatus not only can help save power consumption and thus electricity cost, but also can help prevent the excessive energy to cause damage to the internal circuitry of the wire electric-discharge machining apparatus.
摘要翻译： 提供了一种具有再循环电力的线材放电加工装置，其可将存储在用作电源的放电电路的电感器中的能量再循环到点火电路和放电电路两者，使得使用电 权力更具成本效益。 线放电加工装置具有正电压点火电路，负电压点火电路，放电电路和缓冲电路。 电线放电加工装置的改进包括：耦合在缓冲电路和正电压点火电路之间的第一电压转换电路; 耦合在缓冲电路和负电压点火电路之间的第二电压转换电路; 以及耦合在缓冲电路和放电电路之间的第三电压转换电路。 上述线材放电加工装置能够将现有技术中要排出的过剩能量再循环到点火电路和放电电路的再利用电力中。 结果，电火花线切割加工装置不仅可以有助于节省电力消耗和电力成本，而且可以有助于防止过多的能量损害线材放电加工装置的内部电路。
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