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    • 4. 发明授权
    • Electric discharge machining apparatus
    • 放电加工机
    • US09533365B2
    • 2017-01-03
    • US14437072
    • 2012-10-31
    • Ieyoung KimTakashi HashimotoTomoaki TakadaTakayuki NakagawaYuto Sasaki
    • Ieyoung KimTakashi HashimotoTomoaki TakadaTakayuki NakagawaYuto Sasaki
    • B23H1/02
    • B23H1/024B23H1/02B23H2300/20
    • 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.
    • 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)。
    • 9. 发明申请
    • ELECTRIC DISCHARGE MACHINING APPARATUS
    • 电动放料加工设备
    • US20150283634A1
    • 2015-10-08
    • US14437072
    • 2012-10-31
    • Ieyoung KimTakashi HashimotoTomoaki TakadaTakayuki NakagawaYuto Sasaki
    • Ieyoung KimTakashi HashimotoTomoaki TakadaTakayuki NakagawaYuto Sasaki
    • B23H1/02
    • B23H1/024B23H1/02B23H2300/20
    • 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.
    • 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。