公开(公告)号：US09950377B2

公开(公告)日：2018-04-24

申请号：US14560460

申请日：2014-12-04

申请人： National Taiwan Normal University

发明人： Shun-Tong Chen ,  Chi-Hung Chen ,  Po-Yuan Shih

IPC分类号： B23H1/02

CPC分类号： B23H1/02 ,  B23H2300/20

摘要： The present invention provides a plural resistance-capacitance (PRC) electrical discharge machining system comprising a control module, a digital electronic module, a driving module, and a discharge module. The control module allows the user to input a command and output a control signal accordingly. The digital electronic module processes the control signal and outputs a sequence signal to the driving circuit. The driving module amplifies the sequence signal and then outputs a driving signal to the discharge module. The discharge module then controls and drives a plurality of transistors to open circuits and break circuits according to the driving signal for controlling the charging and discharging of a plurality of capacitors of the discharge module in the electrical discharge machining. The present invention can increase the amount of discharge in a machining process, and improves the efficiency thereof.

公开(公告)号：US09278399B2

公开(公告)日：2016-03-08

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： B23H1/00 ,  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 1/5.

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。

公开(公告)号：US20150283634A1

公开(公告)日：2015-10-08

申请号：US14437072

申请日：2012-10-31

申请人： Ieyoung Kim ,  Takashi Hashimoto ,  Tomoaki Takada ,  Takayuki Nakagawa ,  Yuto Sasaki

发明人： Ieyoung Kim ,  Takashi Hashimoto ,  Tomoaki Takada ,  Takayuki Nakagawa ,  Yuto Sasaki

IPC分类号： B23H1/02

CPC分类号： B23H1/024 ,  B23H1/02 ,  B23H2300/20

摘要： 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 (ΔTon) 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 (ΔToff) equal to or longer than a time width (Δtic) of a discharge current flowing during the capacitor discharge and shorter than a cycle (ΔTso) of the self-excited oscillation.

摘要翻译： 一种放电加工装置，包括电源，由电极和工件形成的电极间隙，连接在电源和电极间隙之间的限流电阻，使来自电源的电压接通和断开的开关元件 电连接到电极间隙，电感元件串联连接在开关元件和电极间隙之间，控制单元控制开关元件。 控制单元使开关元件根据具有导通脉冲时间宽度（＆Dgr; Ton）的开关模式进行ON / OFF操作，其中电极间隙的电压可以在导通时达到电源的电压值 脉冲时间和暂停时间宽度（＆Dgr; Toff）等于或长于在电容器放电期间流动的放电电流的时间宽度（＆Dgr; tic），并且短于自激的周期（＆Dgr; Tso） 振荡。

公开(公告)号：US20140319102A1

公开(公告)日：2014-10-30

申请号：US14359367

申请日：2011-11-30

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： B23H1/02 ,  B23H1/022 ,  B23H7/02 ,  B23H2300/20

摘要： The present invention includes a series circuit that includes a DC power supply and a switching element for supplying a DC or AC current pulse to a machining gap between a machining electrode and a workpiece; and a control unit that controls the switching element, wherein when generating a current pulse having a triangular shape by an inductance present on the series circuit, the control unit controls on-time and off-time of the switching element such that a peak value of an arbitrary current pulse in a pulse train including a plurality of current pulses changes.

摘要翻译： 本发明包括一个串联电路，它包括直流电源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开关元件; 以及控制单元，其控制所述开关元件，其中当通过存在于所述串联电路上的电感产生具有三角形形状的电流脉冲时，所述控制单元控制所述开关元件的导通时间和关断时间，使得所述开关元件的峰值 包括多个电流脉冲的脉冲串中的任意电流脉冲发生变化。

公开(公告)号：US06958460B2

公开(公告)日：2005-10-25

申请号：US10419788

申请日：2003-04-22

申请人： Roland Martin ,  Sebastian Dorthe ,  Maurizio Tognolini

发明人： Roland Martin ,  Sebastian Dorthe ,  Maurizio Tognolini

IPC分类号： B23H7/14 ,  B23H1/02

CPC分类号： B23H1/022 ,  B23H2300/20

摘要： The device for machining by electroerosion comprises an electrode-tool (EO) and an electrode-workpiece (EP) constituting the opposite poles of a working gap (GA) and an electrical circuit with a double voltage source (UD) connected to a supply network (A) arranged so as to produce erosive discharges between the electrode-tool (EO) and the electrode-workpiece (EP). This double voltage source (UD) comprises a first (U1) and a second (U2) voltage source connected galvanically to each other by their poles. This double source (UD) is connected to the working gap by at least four separate branches (B1 to B4) of which at least one comprises a self-induction element (LL, LL). Switching elements (SW1, SW2) permit producing by selective connection of the branches at least two increasing current slopes and at least two decreasing current slopes.

摘要翻译： 通过电蚀加工的装置包括电极工具（EO）和构成工作间隙（GA）的相反极的电极 - 工件（EP）和具有连接到供电网络的双电压源（UD）的电路 （A）布置成在电极工具（EO）和电极 - 工件（EP）之间产生腐蚀性放电。 该双电压源（UD）包括通过它们的极彼此电连接的第一（U 1）和第二（U 2）电压源。 该双重源（UD）通过至少四个独立的分支（B 1至B 4）连接到工作间隙，其中至少一个包括自感应元件（LL，LL）。 开关元件（SW 1，SW 2）允许通过选择性地连接分支至少两个增加的电流斜率和至少两个减小的电流斜率来产生。

公开(公告)号：US06580048B2

公开(公告)日：2003-06-17

申请号：US09847359

申请日：2001-05-03

申请人： Takashi Hashimoto ,  Akihiro Suzuki ,  Taichirou Tamida ,  Akihiko Iwata ,  Yoshikazu Tsunoda ,  Hiroyuki Ooguro ,  Yoshikazu Ukai

发明人： Takashi Hashimoto ,  Akihiro Suzuki ,  Taichirou Tamida ,  Akihiko Iwata ,  Yoshikazu Tsunoda ,  Hiroyuki Ooguro ,  Yoshikazu Ukai

IPC分类号： B23H102

CPC分类号： B23H1/022 ,  B23H2300/20 ,  B23H2300/22

摘要： Charge accumulated in a capacitor is used to provide a processing current flow between a target and an electrode. When a diode is turned on, a first dc power supply is used to provide the processing current flow between the target and the electrode. In this state, after a lapse of a predetermined time, the current supply using the first dc power supply is stopped, and an induced electromotive voltage, induced by two floating reactors, is used to rapidly drop the processing current flowing between the target and the electrode, while charging the capacitor.

摘要翻译： 电容器中累积的电荷用于提供目标和电极之间的处理电流。 当二极管接通时，使用第一直流电源来提供目标和电极之间的处理电流。 在这种状态下，在经过预定时间后，停止使用第一直流电源的电流供应，并且使用由两个浮动电抗器引起的感应电动势来迅速地降低在目标和 电极，同时给电容充电。

公开(公告)号：US06423920B1

公开(公告)日：2002-07-23

申请号：US09762062

申请日：2001-02-01

申请人： Yuji Kaneko ,  Daisuke Sadsmitsu ,  Zhanbo Gu

发明人： Yuji Kaneko ,  Daisuke Sadsmitsu ,  Zhanbo Gu

IPC分类号： B23H102

CPC分类号： B23H1/022 ,  B23H2300/20 ,  B23H2300/22

摘要： A power supply (100) and a method for electric discharge machining by repeatedly providing a current pulse to a working gap (3) formed between a tool electrode (1) and a workpiece (2) includes a d.c. power source (E), first switching elements (Tr1-Trn) connected between the d.c. power source and the working gap, capacitors (C1-C8) connected in parallel with the working gap, second switching elements (67) for controlling current flow from the capacitor to the working gap, a detector (50) for detecting start of an electric discharge, and a controller (20) for controlling the first switching elements and the second switching elements in response to the detector. Current is supplied from the d.c. power source through the first switching elements to the working gap only for a first time interval (&tgr; ON) starting from the commencement of electric discharge, and a current is supplied from the capacitor through the second switching elements to the working gap for only a second time interval (T) is shorter than the first time interval, starting from the commencement of an electric discharge.

摘要翻译： 通过对形成在工具电极（1）和工件（2）之间的工作间隙（3）重复提供电流脉冲的电源（100）和放电加工方法包括直流电。 电源（E），连接在直流电源之间的第一开关元件（Tr1-Trn）。 电源和工作间隙，与工作间隙并联连接的电容器（C1-C8），用于控制从电容器到工作间隙的电流的第二开关元件（67），用于检测电 放电，以及用于响应于检测器控制第一开关元件和第二开关元件的控制器（20）。 电流由d.c.提供。 电源通过第一开关元件到工作间隙，仅从放电开始开始的第一时间间隔（＆amp; tgr; ON），并且电流从电容器通过第二开关元件提供到工作间隙，仅用于 从放电开始开始，第二时间间隔（T）比第一时间间隔短。

公开(公告)号：US20020092832A1

公开(公告)日：2002-07-18

申请号：US09847359

申请日：2001-05-03

发明人： Takashi Hashimoto ,  Akihiro Suzuki ,  Taichirou Tamida ,  Akihiko Iwata ,  Yoshikazu Tsunoda ,  Hiroyuki Ooguro ,  Yoshikazu Ukai

IPC分类号： B23H007/14

CPC分类号： B23H1/022 ,  B23H2300/20 ,  B23H2300/22

摘要： Charge accumulated in a capacitor is used to allow a processing current to flow between a target and an electrode. When a diode is turned on, a first dc power supply is used to allow the processing current to flow between the target and the electrode. In this state, after a lapse of a predetermined time, the current supply using the first dc power supply is stopped, and an induced electromotive voltage, induced by two floating reactors, is used to rapidly drop the processing current flowing between the target and the electrode, while charging the capacitor.

摘要翻译： 电容器中累积的电荷用于允许处理电流在靶和电极之间流动。 当二极管接通时，使用第一直流电源来使处理电流在靶和电极之间流动。 在这种状态下，在经过预定时间后，停止使用第一直流电源的电流供应，并且使用由两个浮动电抗器引起的感应电动势来迅速地降低在目标和 电极，同时给电容充电。

公开(公告)号：US5770831A

公开(公告)日：1998-06-23

申请号：US564324

申请日：1995-12-19

申请人： Yuji Kaneko ,  Tadao Ueda

发明人： Yuji Kaneko ,  Tadao Ueda

IPC分类号： B23H1/02 ,  B23H7/04

CPC分类号： B23H1/022 ,  B23H2300/20 ,  B23H2300/22

摘要： First power supply circuit 8, second power supply circuit 6, and third power supply circuit 9 are connected to form a power supply unit 5. The first power supply circuit 8 includes a direct current power supply 8A and switching element 8B. The power supply circuit 8 does not include any substantial resistance, and has comparatively low inductance and impedance characteristics. The power supply circuit 6 includes a direct current power supply 6A, switching element 6B, and current limiting resistor 6C. The power supply circuits 6, 8, and 9 are connected to the gap using a cable 11 as a common interconnect. A high frequency alternating current circuit is formed by the power supply circuit 8, conductor 11, coupling transformer 13, and the gap. In this event, switches 6F, 6G, 9F, and 9G, associated with power supply circuits 6 and 9, are opened, and the power supply circuits 6 and 9 are completely disconnected from the above high frequency alternating current circuit. It is preferable that the switches 6G, 6F, 9F, and 9 G be butt-type switch devices which will completely disconnect and connect the power supply circuits 6 and 8. Also, when using the high frequency alternating current, it is desirable to use an appropriate detection device 30 having a photocoupler 35 as the means for detecting the gap voltage.

摘要翻译： PCT No.PCT / JP95 / 00826 Sec。 371 1995年12月19日第 102（e）日期1995年12月19日PCT 1995年4月26日PCT PCT。 第WO95 / 29031号公报 日期1995年11月2日第一电源电路8，第二电源电路6和第三电源电路9被连接以形成电源单元5.第一电源电路8包括直流电源8A和开关元件8B 。 电源电路8不包含任何实质的电阻，并且具有较低的电感和阻抗特性。 电源电路6包括直流电源6A，开关元件6B和限流电阻器6C。 使用电缆11将电源电路6,8和9连接到间隙，作为公共互连。 高频交流电路由电源电路8，导体11，耦合变压器13和间隙构成。 在这种情况下，与电源电路6和9相关联的开关6F，6G，9F和9G被断开，电源电路6和9与上述高频交流电路完全断开。 优选的是，开关6G，6F，9F和9G是将完全断开并连接电源电路6和8的对接型开关装置。而且，当使用高频交流电时，最好使用 具有作为用于检测间隙电压的装置的光电耦合器35的合适的检测装置30。

公开(公告)号：US5386095A

公开(公告)日：1995-01-31

申请号：US156067

申请日：1993-11-23

申请人： Yuji Kaneko ,  Shinji Ito

发明人： Yuji Kaneko ,  Shinji Ito

IPC分类号： B23H1/02

CPC分类号： B23H1/022 ,  B23H1/024 ,  B23H2300/20

摘要： A power supply for an electroerosion machine having a switching element which controls the machining current in the gap. The value of the current is compared with a predetermined voltage and the signal generated based on this comparation is provided to a logic gate, advantageously and "AND" gate, whose output signal is applied to the control electrode of the switching element. Electrode consumption is reduced by using a generally step-type current waveform signal. Machining current during the discharge period may also be controlled to more closely approximate a square wave so that shifting to a faster machining rate can be easily accomplished by accepting some sacrifice in electrode consuption. Preferably, two or more switching and gating devices are used to permit gap current to flow intermittently during the entire discharge period.

摘要翻译： 一种用于电腐蚀机的电源，其具有控制间隙中的加工电流的开关元件。 将电流的值与预定电压进行比较，并将基于该比较产生的信号提供给逻辑门，有利地和“与”门，其输出信号被施加到开关元件的控制电极。 通过使用大致阶梯式电流波形信号来降低电极消耗。 放电期间的加工电流也可以被控制为更接近近似方波，从而通过接受电极消耗中的一些牺牲，可以容易地实现转换到更快的加工速度。 优选地，使用两个或更多个开关和门控装置来允许间隙电流在整个放电期间间歇地流动。