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21. 发明授权

US5763843A Device and method for electrical discharge machining 失效
标题翻译：放电加工的装置和方法
公开(公告)号：US5763843A
公开(公告)日：1998-06-09
申请号：US833062
申请日：1997-04-03
申请人： Takashi Yuzawa , Manabu Yoshida , Takuji Magara
发明人： Takashi Yuzawa , Manabu Yoshida , Takuji Magara
IPC分类号： B23H7/20 , B23H7/26 , B23H7/28 , B23H7/30 , B23H1/00
CPC分类号： B23H7/30 , B23H7/20 , B23H2400/10
摘要： The electrical discharge machining device includes storage apparatus for storing the two-dimensional contour pass of the machined shape formed by the primary machining operation, the dimension of the taper of the side surface of the workpiece to be machined, the amounts of feed of the electrode in a given Z direction with respect to the movements of the electrode in the X and Y direction under respective machining conditions; information adding apparatus for adding offset information to the above-mentioned contour pass; machining operation number calculating apparatus, in accordance with a previously obtained machining depth per round about an electrode pass, for calculating the number of machining operations to be repeatedly executed around the electrode pass until a target depth is obtained; offset displacement amount calculating apparatus for calculating an offset displacement amount per round about the electrode pass in accordance with the length in the above-mentioned side surface direction of the side surface taper dimensions and the number of repeated machining operations; and, electrode position control apparatus, in accordance with an offset position added to the contour pass by the offset information adding apparatus, for controlling the offset displacement amount each time the electrode pass is machined.
摘要翻译：放电加工装置包括：存储装置，用于存储由主加工操作形成的加工形状的二维轮廓通过，待加工的工件的侧面的锥形尺寸，电极的进给量在给定的Z方向上相对于在各自的加工条件下的X和Y方向上的电极的移动; 用于将偏移信息添加到上述轮廓通过的信息添加装置; 加工操作数计算装置，根据先前获得的关于电极通过的每轮的加工深度，用于计算在电极通过周围重复执行的加工操作的数量，直到获得目标深度; 偏移位移量计算装置，用于根据上述侧面锥形尺寸的侧面方向上的长度和重复的加工操作次数来计算每一圈绕电极通过的偏移位移量; 以及电极位置控制装置，根据由偏移信息添加装置添加到轮廓线的偏移位置，用于在每次加工电极通过时控制偏移位移量。

22. 发明授权

US5585014A Method and apparatus for electrical discharge machining using variable capacitance and variable inductance 失效
标题翻译：使用可变电容和可变电感进行放电加工的方法和装置
公开(公告)号：US5585014A
公开(公告)日：1996-12-17
申请号：US268452
申请日：1994-06-30
申请人： Takuji Magara
发明人： Takuji Magara
IPC分类号： B23H1/02 , B23H7/04 , B23H7/14 , H03H7/40
CPC分类号： B23H1/022 , B23H2300/20 , B23H2300/22
摘要： An electric discharge machine having a source of pulse power, optionally including bipolar pulses, which is connected to an electrode which forms a gap with a workpiece and is operative to provide both machining and finishing processes. Switching of power to the machining gap and impedance matching at the machining gap, in order to suppress the influence of the capacitance of the high-speed machining feeder cables connected to the machining gap in finishing, is provided so that machining can be performed at high accuracy with a properly timed and shaped discharge current. Impedance matching is provided by selectively switching among plural capacitances or inductances, which may be in the form of cables or printed patterns on a circuit board which have predetermined values, such as a geometric series values of which coefficient is 2.
摘要翻译：一种具有脉冲功率源（可选地包括双极脉冲）的放电机，其连接到与工件形成间隙的电极，并且可操作以提供加工和精加工工艺。提供加工间隙的功率切换和加工间隙的阻抗匹配，以便抑制连接到精加工中的加工间隙的高速加工馈电电缆的电容的影响，使得可以在高处进行加工具有适当定时和成形放电电流的精度。通过选择性地切换多个电容或电感来提供阻抗匹配，这些电容或电感可以是具有预定值的电路板上的电缆或印刷图案的形式，例如系数为2的几何系列值。

23. 发明授权

US5580469A Electrical discharge machine with prevention of pulse crack phenomenon 失效
标题翻译：放电机具有防止脉冲破裂现象
公开(公告)号：US5580469A
公开(公告)日：1996-12-03
申请号：US269350
申请日：1994-06-30
申请人： Takuji Magara
发明人： Takuji Magara
IPC分类号： B23H1/02 , B23H7/04
CPC分类号： B23H1/022 , B23H2300/20
摘要： An electrical discharge machine for machining a workpiece with the application of a voltage to a machining gap formed between an electrode and the workpiece which has a direct-current power supply for supplying a machining current and a current limiting device connected in series with the direct-current power supply for limiting the machining current. A switching device is connected in series with the direct-current power supply and current limiting device and is operative to provide a voltage to the machining gap and to form a direct-current pulse. A series circuit of an inductance and a capacitor is provided in parallel with the machining gap. The purpose of the series circuit is either for suppressing the interruption of a direct-current pulse current component which follows a capacitor discharge current component, whereby the occurrence of a pulse crack phenomenon can be prevented or for suppressing the continuation of a direct-current pulse current component, particularly pulses, which follows a capacitor discharge current component. Depending on whether or not the finish is to be of mirror quality, values of capacitance and inductance for the series circuit can be chosen within specified ranges.
摘要翻译： 1.一种放电加工机，其特征在于，通过对形成在电极和工件之间的加工间隙施加电压来加工工件，所述加工间隙具有用于提供加工电流的直流电源和与直流电源串联连接的限流装置，用于限制加工电流的当前电源。开关装置与直流电源和限流装置串联连接，并可操作以向加工间隙提供电压并形成直流脉冲。与加工间隙平行地设置电感和电容器的串联电路。串联电路的目的是为了抑制跟随电容器放电电流分量的直流脉冲电流分量的中断，从而可以防止出现脉冲破裂现象或抑制直流脉冲的继续电流分量，特别是脉冲，其遵循电容器放电电流分量。取决于光洁度是否为镜面质量，串联电路的电容值和电感值可以在指定范围内选择。

24. 发明授权

US5237145A Wire cut electric discharge machining method 失效
标题翻译：线切割放电加工方法
公开(公告)号：US5237145A
公开(公告)日：1993-08-17
申请号：US982410
申请日：1992-11-27
申请人： Takuji Magara , Takeshi Iwasaki , Toshio Suzuki , Masahiro Yamamoto
发明人： Takuji Magara , Takeshi Iwasaki , Toshio Suzuki , Masahiro Yamamoto
IPC分类号： B23H7/02 , B23H7/10
CPC分类号： B23H7/02 , B23H7/10
摘要： In a wire cut electric discharge machining method, feeding units having wire electrode feeding mechanisms are provided for wire electrodes different in diameter, respectively. The feeding units are moved, one at a time, to a wire electrode feeding path by cylinders coupled detachably to thereto, respectively, whereby the wire electrodes different in diameter are automatically replaced with each other, and machining conditions are automatically selected according to the diameter of a wire electrode and a machining process which are to be used. Therefore, the workpiece can be machined with the wire electrode most suitable for the given machining configuration. Thus, the method is high in machining accuracy and in machining efficiency.
摘要翻译：在线切割放电加工方法中，分别具有线电极馈送机构的馈电单元用于直径不同的线电极。馈送单元一次一个地移动到通过可拆卸地联接到其上的圆柱体的线电极馈送路径，由此直径不同的线电极彼此自动替换，并且根据直径自动选择加工条件的线电极和加工工序。因此，可以使用最适合于给定加工配置的线电极来加工工件。因此，该方法的加工精度和加工效率高。

25. 发明授权

US4698477A Electrical discharge machining apparatus with forced cooling system 失效
标题翻译：具有强制冷却系统的放电加工装置
公开(公告)号：US4698477A
公开(公告)日：1987-10-06
申请号：US741056
申请日：1985-06-04
申请人： Jun Aramaki , Toshiharu Karashima , Takuji Magara , Minoru Ushida
发明人： Jun Aramaki , Toshiharu Karashima , Takuji Magara , Minoru Ushida
IPC分类号： B23H11/00 , B23H1/00
CPC分类号： B23H11/00
摘要： An electrical discharge machining apparatus in which a workpiece is machined by generating an electrical discharge between the workpiece and a facing electrode immersed in a machining liquid. A blower is provided for forcing cooling air into the interior of a bed, a column, and a head of the apparatus to prevent thermal displacements between the electrode and the workpiece and thus ensure accurate machining. The blower may also be used to cool the machining liquid.
摘要翻译：一种放电加工装置，其中通过在工件和浸在加工液中的对置电极之间产生放电来加工工件。提供鼓风机用于迫使冷却空气进入设备的床，柱和头部的内部，以防止电极和工件之间的热位移，从而确保精确的加工。鼓风机也可用于冷却加工液体。

26. 发明授权

US07109432B2 Electric power unit for machining of wire electric discharge machine 失效
标题翻译：电火花加工机组
公开(公告)号：US07109432B2
公开(公告)日：2006-09-19
申请号：US10415749
申请日：2002-06-12
申请人： Hiroatsu Kobayashi , Takuji Magara
发明人： Hiroatsu Kobayashi , Takuji Magara
IPC分类号： B23H7/04 , B23H7/14
CPC分类号： B23H1/022 , B23H7/04
摘要： The electric power unit for machining of a wire electric discharge machine includes an electric discharge state discriminate or (1a) for discriminating a state of electric discharge generated between the electrodes and an impression voltage selecting means (1b) for inverting the polarity of the electric discharge inductive pulse voltage from the previous electric discharge inductive pulse voltage when an electric discharge state between the electrodes is discriminated to be abnormal (Y1) or open (Y3) and for making the polarity of the electric discharge inductive pulse voltage to be the same as the polarity of the previous electric discharge inductive pulse voltage when the electric discharge state between the electrodes is discriminated to be normal (Y2).
摘要翻译：用于加工线电放电机的电力单元包括放电状态鉴别或（1a），用于识别电极之间产生的放电状态和压电电压选择装置（1b），用于使电极的极性反转当电极之间的放电状态被判定为异常（Y 1）或断开（Y 3）并且使放电感应脉冲电压的极性为放电感应脉冲电压时，来自先前放电感应脉冲电压的放电感应脉冲电压为与电极之间的放电状态判断为正常（Y 2）时，与先前的放电感应脉冲电压的极性相同。

27. 发明申请

US20050098541A1 Method and system for electric discharge machining insulating material or high resistance material 失效
公开(公告)号：US20050098541A1
公开(公告)日：2005-05-12
申请号：US10472384
申请日：2002-01-24
申请人： Naotake Mohri , Yasushi Fukuzawa , Akihiro Goto , Takuji Magara
发明人： Naotake Mohri , Yasushi Fukuzawa , Akihiro Goto , Takuji Magara
IPC分类号： B23H1/02 , B23H9/00 , B23K9/00
CPC分类号： B23H1/022 , B23H1/02 , B23H9/00
摘要： An electric discharge machine for machining a workpiece (2a) made of insulating material or other materials comprises: a first comparison member (17) for comparing voltage (V) between the electrodes of the electrode (1) and the workpiece (2a) with the first reference voltage (V1) which is set at a value close to electric power source voltage (V0) not higher than electric power source voltage (V0); a second comparison member (18) for comparing voltage (V) between the electrodes with the second reference voltage (V2) which is set at a value lower than the first reference voltage (V1); and a control member (19) for setting a short electric discharge pulse width (TP1) in the case where voltage (V) between the electrodes is lower than the second reference voltage (V2) according to the result of comparison conducted by the second comparison member (18) at a point of time when a predetermined period of time (T0) has passed from the time when voltage (V) between the electrodes becomes lower than the first reference voltage (V1) according to the result of comparison conducted by the first comparison member (17), and for setting a long electric discharge pulse width (TP2) in the case where the voltage between the electrodes is higher than the second reference voltage (V2). This electric discharge machine is capable of stabilizing the machining of the workpiece (2a) made of insulating material or other materials and also capable of enhancing quality of a machined face.

28. 发明申请

US20050072759A1 Working liquid ejector of wire electric discharge machine 失效
标题翻译：线放电机工作液体喷射器
公开(公告)号：US20050072759A1
公开(公告)日：2005-04-07
申请号：US10499946
申请日：2002-03-28
申请人： Hisashi Yamada , Ryogo Koba , Takuji Magara , Masao Akiyoshi
发明人： Hisashi Yamada , Ryogo Koba , Takuji Magara , Masao Akiyoshi
IPC分类号： B23H7/02 , B23H7/10
CPC分类号： B23H7/101
摘要： A machining-fluid ejection device for a wire electric discharge machining apparatus includes a nozzle for ejecting machining-fluid into an inter-electrode gap between a workpiece (W) and a wire electrode (E), a casing (16) fixed to a machining head (15) disposed above or below the workpiece (W), a coupling member (18) for coupling the casing (16) and a nozzle (17), having a predetermined elastic coefficient, and deforming according to the machining-fluid pressure; wherein an assemblage of the coupling member (18) and the nozzle (17) has hollow portions, formed with an inlet side internal diameter (D2) and an outlet side internal diameter (D1) on a machining-fluid inlet side and outlet side respectively, whose sectional areas do not change, and a hollow portion, formed with a minimum internal diameter (D0) between the machining-fluid inlet side and the outlet side, whose sectional area does not change. Machining productivity may-be raised for nozzle contact machining and nozzle separation machining.
摘要翻译：一种用于线材放电加工设备的机加工液喷射装置，包括：用于将加工流体喷射到工件（W）和线电极（E）之间的电极间间隙中的喷嘴;固定到加工位于工件（W）上方或下方的头部（15），用于联接壳体（16）的联接构件（18）和具有预定弹性系数的喷嘴（17），并根据加工液压力变形; 其中所述联接构件（18）和所述喷嘴（17）的组合具有中空部分，其分别在机械流体入口侧和出口侧形成有入口侧内径（D2）和出口侧内径（D1），其截面积不变化的中空部分，在切削面积不变的加工液入口侧和出口侧之间形成有最小内径（D0）的中空部。喷嘴接触加工和喷嘴分离加工可能会增加加工生产率。

29. 发明授权

US06787727B2 Automatic wire electrode feeder for wire electric discharge machining devices 有权
标题翻译：自动线电极给料机用于线材放电加工装置
公开(公告)号：US06787727B2
公开(公告)日：2004-09-07
申请号：US10203270
申请日：2002-08-08
申请人： Hisashi Yamada , Takuji Magara , Yutaka Terada
发明人： Hisashi Yamada , Takuji Magara , Yutaka Terada
IPC分类号： B23H710
CPC分类号： B23H7/102
摘要： An automatic wire feeder of a wire electric discharge machine includes an optical sensor for detecting positional information of a wire electrode in an inserting passage between a feed roller for feeding a wire electrode and an upper wire guide; and a control unit for discriminating a state of vibration or deflection of the wire electrode according to the positional information detected by the optical sensor and also for controlling a feeding and rewinding motion of the feed roller according to a quantity of deflection of the wire electrode. Due to the foregoing, buckling caused by an inserting load in the process of automatic wire connection can be positively detected, and the reliability can be enhanced and further the repetition of connecting the wire again can be reduced.
摘要翻译：线放电机的自动送丝机包括：光传感器，用于检测用于馈送线电极的馈送辊和上导线器之间的插入通道中的线电极的位置信息; 以及控制单元，用于根据由光学传感器检测到的位置信息来鉴别线电极的振动或偏转状态，并且还用于根据线电极的偏转量来控制进给辊的进给和重绕运动。由于上述原因，可以可靠地检测出自动连线过程中的插入负荷引起的翘曲，可靠性得到提高，并且可以进一步减少连线的重复。

30. 发明授权

US6147500A EDM with jump motion detecting reactive force 有权
标题翻译： EDM具有跳跃运动检测反作用力
公开(公告)号：US6147500A
公开(公告)日：2000-11-14
申请号：US396456
申请日：1999-09-15
申请人： Yoshihito Imai , Hidetaka Miyake , Takuji Magara , Akihiro Goto
发明人： Yoshihito Imai , Hidetaka Miyake , Takuji Magara , Akihiro Goto
IPC分类号： B23H1/02 , B23H7/18 , G01N27/60
CPC分类号： B23H7/18
摘要： An electric discharge machine for machining a workpiece by an electric discharge by supplying a machining fluid to a gap between an electrode and the workpiece and supplying pulses to the workpiece while providing the electrode with a jump motion having a periodic motion of the electrode relative to the workpiece; wherein the electric discharge machine detects a state quantity caused in a main body of the electric discharge machine by a reactive force produced by a machining operation in the gap between the electrode and the workpiece and changes machining conditions of the workpiece in accordance with a detected value of the state quantity.
摘要翻译：一种放电机，用于通过将电机和工件之间的间隙供给加工流体并向工件供给脉冲，同时为电极提供具有电极相对于电极的周期运动的跳跃运动，通过放电来加工工件工件; 其特征在于，所述放电加工机通过在所述电极和所述工件之间的间隙中的加工操作产生的反作用力来检测在所述放电加工机的主体中产生的状态量，并根据检测值改变所述工件的加工条件的国家数量。

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