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公开(公告)号：US09440300B2
公开(公告)日：2016-09-13
申请号：US13982933
申请日：2012-10-30
申请人： Tomoaki Takada , Takashi Hashimoto , Ieyoung Kim , Takayuki Nakagawa , Yuto Sasaki , Yuji Nasu , Masato Terashima
发明人： Tomoaki Takada , Takashi Hashimoto , Ieyoung Kim , Takayuki Nakagawa , Yuto Sasaki , Yuji Nasu , Masato Terashima
IPC分类号： B23H1/02
CPC分类号： B23H1/022 , B23H1/02 , B23H2300/22
摘要： An electric discharge machining apparatus of the present invention includes a power supply, an electrode gap configured so as to be formed by an electrode and a workpiece, and an earth floating-capacitance current-suppressing coil configured to be inserted between the power supply and the electrode gap. Accordingly, the impedance in the charging path from the power supply to an interelectrode capacitance (an interelectrode parallel capacitor and an interelectrode parallel floating capacitance) can be decreased, and the impedance in the charging path to an earth floating capacitance can be increased, thereby enabling the electric current from the earth floating capacitance during discharge machining to be suppressed.
摘要翻译： 本发明的放电加工装置包括：电源，由电极和工件形成的电极间隙;以及接地浮动电容电流抑制线圈，被配置为插入在电源和工件之间 电极间隙。 因此，可以减少从电源到电极间电容（电极间并联电容器和电极间并联浮置电容）的充电路径中的阻抗，并且可以增加到接地浮动电容的充电路径中的阻抗，从而使能 在放电加工期间来自接地浮动电容的电流被抑制。
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公开(公告)号：US20140116990A1
公开(公告)日：2014-05-01
申请号：US13982933
申请日：2012-10-30
申请人： Tomoaki Takada , Takashi Hashimoto , Ieyoung Kim , Takayuki Nakagawa , Yuto Sasaki , Yuji Nasu , Masato Terashima
发明人： Tomoaki Takada , Takashi Hashimoto , Ieyoung Kim , Takayuki Nakagawa , Yuto Sasaki , Yuji Nasu , Masato Terashima
IPC分类号： B23H1/02
CPC分类号： B23H1/022 , B23H1/02 , B23H2300/22
摘要： An electric discharge machining apparatus of the present invention includes a power supply, an electrode gap configured so as to be formed by an electrode and a workpiece, and an earth floating-capacitance current-suppressing coil configured to be inserted between the power supply and the electrode gap. Accordingly, the impedance in the charging path from the power supply to an interelectrode capacitance (an interelectrode parallel capacitor and an interelectrode parallel floating capacitance) can be decreased, and the impedance in the charging path to an earth floating capacitance can be increased, thereby enabling the electric current from the earth floating capacitance during discharge machining to be suppressed.
摘要翻译： 本发明的放电加工装置包括：电源，由电极和工件形成的电极间隙;以及接地浮动电容电流抑制线圈，被配置为插入在电源和工件之间 电极间隙。 因此，可以减少从电源到电极间电容（电极间并联电容器和电极间并联浮置电容）的充电路径中的阻抗，并且可以增加到接地浮动电容的充电路径中的阻抗，从而使能 在放电加工期间来自接地浮动电容的电流被抑制。
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公开(公告)号：US09533365B2
公开(公告)日：2017-01-03
申请号：US14437072
申请日：2012-10-31
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（ΔTon）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脉冲中达到电源的电压值 时间和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（Δtic）的暂停时间宽度（ΔToff），并且短于自激振荡的周期（ΔTso）。
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公开(公告)号：US20150283634A1
公开(公告)日：2015-10-08
申请号：US14437072
申请日：2012-10-31
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。
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公开(公告)号：US09446465B2
公开(公告)日：2016-09-20
申请号：US14420403
申请日：2012-10-30
申请人： Yuto Sasaki
发明人： Yuto Sasaki
摘要： A control unit controls an on/off operation of a switching unit such that a first DC pulse voltage is applied across an electrode gap from a pulse-voltage generation unit adjusted to a first impedance, and when a detection unit detects a preliminary discharge, a second DC pulse voltage is applied across the electrode gap from the pulse-voltage generation unit adjusted to a second impedance, which is lower than the first impedance, so as to generate a main discharge in the electrode gap, and during an idle time since the main discharge is completed until the next preliminary discharge is started, a third DC pulse voltage that is equal to or higher than a discharge arc voltage is applied across the electrode gap from the pulse-voltage generation unit adjusted to a third impedance, which is higher than the first impedance.
摘要翻译： 控制单元控制开关单元的开/关操作，使得从调整到第一阻抗的脉冲电压产生单元的电极间隙施加第一DC脉冲电压，并且当检测单元检测到初步放电时， 第二直流脉冲电压施加在电极间隙上，脉冲电压产生单元被调整到低于第一阻抗的第二阻抗，以便在电极间隙中产生主放电，并且在空闲时间内 主放电完成直到下一个初步放电开始，等于或高于放电电弧电压的第三直流脉冲电压被施加到电极间隙上，从调节到第三阻抗的脉冲电压产生单元 比第一阻抗。
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公开(公告)号：US20150217390A1
公开(公告)日：2015-08-06
申请号：US14420403
申请日：2012-10-30
申请人： Yuto Sasaki
发明人： Yuto Sasaki
IPC分类号： B23H1/02
摘要： A control unit controls an on/off operation of a switching unit such that a first DC pulse voltage is applied across an electrode gap from a pulse-voltage generation unit adjusted to a first impedance, and when a detection unit detects a preliminary discharge, a second DC pulse voltage is applied across the electrode gap from the pulse-voltage generation unit adjusted to a second impedance, which is lower than the first impedance, so as to generate a main discharge in the electrode gap, and during an idle time since the main discharge is completed until the next preliminary discharge is started, a third DC pulse voltage that is equal to or higher than a discharge arc voltage is applied across the electrode gap from the pulse-voltage generation unit adjusted to a third impedance, which is higher than the first impedance.
摘要翻译： 控制单元控制开关单元的开/关操作，使得从调整到第一阻抗的脉冲电压产生单元的电极间隙施加第一DC脉冲电压，并且当检测单元检测到初步放电时， 第二直流脉冲电压施加在电极间隙上，脉冲电压产生单元被调整到低于第一阻抗的第二阻抗，以便在电极间隙中产生主放电，并且在空闲时间内 主放电完成直到下一个初步放电开始，等于或高于放电电弧电压的第三直流脉冲电压被施加到电极间隙上，从调节到第三阻抗的脉冲电压产生单元 比第一阻抗。
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