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21. 发明授权

US5243168A Electric discharge machine 失效
标题翻译：电动排料机
公开(公告)号：US5243168A
公开(公告)日：1993-09-07
申请号：US800425
申请日：1991-11-29
申请人： Mitsuyoshi Wada , Takuji Magara
发明人： Mitsuyoshi Wada , Takuji Magara
IPC分类号： B23H1/10 , B23H7/36
CPC分类号： B23H1/10
摘要： An electric discharge machine having a machining solution tank for storing a machining solution containing machining particles, a machining vessel filled with the machining solution to machine a workpiece, and a machining solution circulating system for circulating the machining solution between the machining solution tank and the machining vessel. The vessel has a pair of machining solution jetting devices arranged in the machining vessel in opposition to each other, the machining solution jetting means jets the machining solution delivered thereto, through the machining solution circulating system from the machining solution tank, towards the workpiece in the machining vessel in a predetermined order.
摘要翻译：一种放电加工机，具有：加工液槽，用于储存包含加工颗粒的加工液;加工机加满加工液加工工件;以及加工液循环系统，用于使加工液在加工液罐与加工之间循环船只。该容器具有彼此相对配置在加工容器中的一对加工液喷射装置，机械液喷射装置将从机械液循环系统输送的加工溶液从加工液槽喷射到工件以预定的顺序加工容器。

22. 发明授权

US5183986A Wire-type electric discharge machining system capable magnetically of collecting material that has been removed from a workpiece and confirming the magnetic attraction 失效
标题翻译：电子式放电加工系统，具有磁性收集材料，已从工件中取出并确认磁性吸引力
公开(公告)号：US5183986A
公开(公告)日：1993-02-02
申请号：US772797
申请日：1991-10-08
申请人： Takuji Magara , Masahiro Yamamoto
发明人： Takuji Magara , Masahiro Yamamoto
IPC分类号： B23H7/02 , B23H11/00
CPC分类号： B23H11/00 , B23H7/02
摘要： A wire-type electric discharge machining apparatus capable of attracting material from a workpiece to an integral electromagnet. An aperture is located proximate the electromagnet. When material is attracted by the electromagnet, the aperture will be obstructed. Attraction is confirmed by measuring the pressure in a chamber in communication with the aperture, such that a low pressure indicates obstruction, and thus attraction of the material to the electromagnet. If based on this measurement it appears that the material has not been attracted to the electromagnet, a further attempt is made at a different location of attraction.

23. 发明授权

US06946615B2 Method and system for electric discharge machining insulating material or high resistance material 失效
标题翻译：放电加工绝缘材料或高电阻材料的方法和系统
公开(公告)号：US06946615B2
公开(公告)日：2005-09-20
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
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.
摘要翻译：一种用于加工由绝缘材料或其他材料制成的工件（2a）的放电机包括：用于比较电极（1）的电极和工件（2a）之间的电压（V）的第一比较部件（17）其中第一参考电压（V SUB1）被设置为接近不高于电源电压（V 0）的值 > 0 ）; 用于将电极之间的电压（V）与设定在低于第一参考电压（V 1）的值的第二参考电压（V SUB2）进行比较的第二比较部件（18））; 以及在电极之间的电压（V）低于第二参考电压（V 2）的情况下，用于设定短放电脉冲宽度（T P1 P1）的控制部件（19）根据由第二比较构件（18）在从电压（V）的时间（T 0> 0）的时刻经过预定时间段（T 0> 0 < 根据由第一比较部件（17）进行的比较的结果，电极之间的V（V）变得低于第一参考电压（V SUB），并且设定长的放电脉冲宽度（T 在电极之间的电压高于第二参考电压（V SUB 2）的情况下，P2 ）。该放电机能够稳定由绝缘材料或其他材料制成的工件（2a）的加工，并且还能够提高加工面的质量。

24. 发明授权

US06552291B1 Wire electric discharge machine 失效
标题翻译：线放电机
公开(公告)号：US06552291B1
公开(公告)日：2003-04-22
申请号：US10049424
申请日：2002-02-12
申请人： Hiroatsu Kobayashi , Seiji Satou , Takuji Magara
发明人： Hiroatsu Kobayashi , Seiji Satou , Takuji Magara
IPC分类号： B23H710
CPC分类号： B23H7/101
摘要： A wire electrical discharge machining apparatus provided with: a nozzle for spraying and supplying machining liquid, the nozzle being supported so that a state of the nozzle is switched over from a contact state with a work piece to a non-contact state with the work piece, and vice versa; a spring acting on the nozzle in a direction to make the nozzle move away from the work piece; a pump for changing and controlling a hydraulic pressure of the machining liquid; and electrical conduction switch-over apparatus by which power supply to the work piece is switched over from the nozzle of a conductor to apparatus other than the nozzle, and vice versa, such that the hydraulic pressure of the machining liquid during electric discharge machining is changed and controlled by the pump so that the state of the nozzle is switched over from the contact state to the non-contact state.
摘要翻译：一种电线放电加工设备，其具有：用于喷射和供给加工液的喷嘴，所述喷嘴被支撑，使得所述喷嘴的状态从工件的接触状态切换到与所述工件的非接触状态，反之亦然; 在使喷嘴远离工件的方向上作用在喷嘴上的弹簧; 用于改变和控制加工液体的液压的泵; 以及导电切换装置，通过该装置，工件的电源从导体的喷嘴切换到除了喷嘴之外的装置，反之亦然，使得放电加工期间的加工液体的液压变化并由泵控制，使得喷嘴的状态从接触状态切换到非接触状态。

25. 发明授权

US5858479A Surface treating method by electric discharge 失效
标题翻译：表面处理方法放电
公开(公告)号：US5858479A
公开(公告)日：1999-01-12
申请号：US783675
申请日：1997-01-15
申请人： Nagao Saito , Naotake Mouri , Hirotaka Sunada , Takuji Magara , Akihiro Goto
发明人： Nagao Saito , Naotake Mouri , Hirotaka Sunada , Takuji Magara , Akihiro Goto
IPC分类号： C23C26/00 , H01T14/00
CPC分类号： C23C26/00
摘要： A surface treating method uses an electric discharge machining to form a coating layer having strong adhesion and excellent characteristics on a metal surface such as a hard metal. A discharge electrode is formed by powders containing metal hydride. Electric discharge is generated in a working fluid containing carbon between the discharge electrode and a workpiece. Thus, a coating layer of the metal hydride is formed on a surface of the workpiece.
摘要翻译：表面处理方法使用放电加工来形成在金属表面如硬质金属上具有强粘附性和优异特性的涂层。放电电极由含有金属氢化物的粉末形成。在放电电极和工件之间的含有碳的工作流体中产生放电。因此，在工件的表面上形成金属氢化物的涂层。

26. 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。

27. 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。

28. 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。

29. 发明授权

US5418344A Method and apparatus for wire-cutting electrical discharge machining of a corner 失效
标题翻译：用于线切割角落放电加工的方法和装置
公开(公告)号：US5418344A
公开(公告)日：1995-05-23
申请号：US134902
申请日：1993-10-13
申请人： Takuji Magara , Hisahi Yamada
发明人： Takuji Magara , Hisahi Yamada
IPC分类号： B23H7/06
CPC分类号： B23H7/065 , B23H2600/12
摘要： A wire cut electrical discharge machining apparatus or machining a corner in a workpiece, which uses a gap error voltage to generate a command velocity component. A velocity control device is used for clamping a command velocity at not more than a set velocity value. Alternatively, the error voltage is used to generate the combination of an integration component and a transient response component which is used to generate a command velocity. Also, an inside corner with a small minimum corner radius can be machined at high accuracy by defining a plurality machining tracks, which include a circular portion at an inside corner, to have the same radius.
摘要翻译：线切割放电加工装置或加工工件中的角部，其使用间隙误差电压来生成指令速度分量。速度控制装置用于将指令速度夹紧在不大于设定的速度值。或者，误差电压用于产生用于产生命令速度的积分分量和瞬态响应分量的组合。此外，通过将多个加工轨道（包括在内角处的圆形部分）限定为具有相同的半径，可以以高精度加工具有小的最小角半径的内角。

30. 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。

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