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公开(公告)号：US09844825B2
公开(公告)日：2017-12-19
申请号：US14483566
申请日：2014-09-11
申请人： Agie Charmilles SA
发明人： Marco Boccadoro , Stefano Bonini
摘要： The invention relates to a method for electrical discharge machining of workpieces by electrical discharge pulses generated by a power module of an electrical discharge machine. The invention is characterized in that firstly the discharge voltage of a number N1 of electrical discharge pulses is acquired and stored, secondly a front discharge voltage (63) is determined out of this amount of N1 acquired discharge voltages and thirdly, the voltage Uhps (64) of the electrical discharge pulses produced by the power module for machining the workpiece (17) is adjusted in function of the determined front discharge voltage (63).
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公开(公告)号：US20080245780A1
公开(公告)日：2008-10-09
申请号：US10575108
申请日：2005-01-24
申请人： Shinsuke Miki , Hidetaka Katougi
发明人： Shinsuke Miki , Hidetaka Katougi
IPC分类号： B23K9/10
摘要： A discharge voltage detecting unit 7 detects a discharge voltage and determines an average discharge voltage in a specified period of time. An optimum machining condition computing unit 8 determines a discharge current that makes an average discharge voltage detected by the discharge voltage detecting unit equal to an average discharge voltage when a new machining liquid is used and determines discharging time, non-operating time, and a servo reference voltage depending on the determined discharge current from the relational equations with a discharge current, discharging time, non-operating time, and a servo reference voltage that are stored in the machining condition data base storing unit 9 and establish optimum machining conditions and controls a servo 4 and a machining electrode 5 under the optimum machining conditions by a servo control unit 6 at the time of machining.
摘要翻译： 放电电压检测单元7检测放电电压并且在指定的时间段内确定平均放电电压。 最佳加工条件计算单元8确定当使用新的加工液体时使由放电电压检测单元检测的平均放电电压等于平均放电电压的放电电流并确定放电时间，非工作时间和伺服 参考电压取决于来自具有放电电流，放电时间，非工作时间以及存储在加工条件数据库存储单元9中的伺服参考电压的关系式的确定的放电电流，并建立最佳加工条件并控制 伺服机构4和加工电极5，在最佳加工条件下由伺服控制单元6进行加工。
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公开(公告)号：US20030062342A1
公开(公告)日：2003-04-03
申请号：US10138294
申请日：2002-05-06
发明人： Masao Akiyoshi , Takashi Yuzawa
IPC分类号： B23H007/32
摘要： A jump control apparatus for an electric discharge machine capable of ensuring high machining precision while reducing machining time by removing sludge speedily regardless of differences in shape among workpieces includes a feed control unit (7) for controlling a vertical position of an electrode (1) relative to a workpiece (2), a jump condition estimating unit (8) for estimating jump conditions for the electrode (1) for removing the sludge occurring between the electrode (1) and the workpiece (2) during machining. The jump conditions generated are inputted to the feed control unit (7). The apparatus includes an input unit (10) for inputting machining conditions relating to the jump conditions in precedence to machining, and a numerical control unit (11) for determining various parameters in dependence on the machining conditions. The parameters are inputted to the jump condition estimating unit (8)for estimating the jump conditions through a feed-forward control performed by using the parameters.
摘要翻译： 一种用于放电机的跳跃控制装置，其能够确保高的加工精度，同时通过快速去除污泥而减少加工时间，而不管工件之间的形状差异如何包括用于控制电极（1）的垂直位置的进给控制单元（7） （2），用于估计用于去除在加工期间在电极（1）和工件（2）之间发生的污泥的电极（1）的跳跃条件的跳跃状态估计单元（8）。 所生成的跳跃条件被输入到进给控制单元（7）。 该装置包括用于输入与加工优先级相关的加工条件的输入单元（10），以及用于根据加工条件确定各种参数的数值控制单元（11）。 这些参数被输入到跳跃条件估计单元（8），用于通过使用参数进行的前馈控制来估计跳跃条件。
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4.发明授权
公开(公告)号：US5869797A
公开(公告)日：1999-02-09
申请号：US884662
申请日：1997-06-27
申请人： Akihiro Goto , Mitsuyoshi Wada , Yoshio Ozaki
发明人： Akihiro Goto , Mitsuyoshi Wada , Yoshio Ozaki
摘要： An electrical discharge machine for applying a pulsed voltage to a machining gap between an electrode and a workpiece disposed opposite thereto. An insulating dielectric fluid, such as oil or water mixed with a compound additive, is disposed in the gap. A positive polarity voltage and an opposite polarity voltage are applied via switches and respective impedances to the machining gap in order to generate a discharge for machining the workpiece. A pulse having a first polarity is applied to machine the workpiece and a pulse having a second polarity is applied when the first polarity pulse is not applied. The time of application of the second polarity pulse is increased depending upon the number of short-circuits detected between the electrode and the workpiece.
摘要翻译： 一种放电机，用于对电极和与其相对设置的工件之间的加工间隙施加脉冲电压。 绝缘介质流体，例如与复合添加剂混合的油或水，设置在间隙中。 通过开关和相应的阻抗将正极性电压和相反极性电压施加到加工间隙，以便产生用于加工工件的放电。 施加具有第一极性的脉冲来加工工件，并且当不施加第一极性脉冲时施加具有第二极性的脉冲。 第二极性脉冲的施加时间根据在电极和工件之间检测到的短路数量而增加。
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公开(公告)号：US5698115A
公开(公告)日：1997-12-16
申请号：US534322
申请日：1995-09-27
申请人： Akihiro Goto , Mitsuyoshi Wada , Yoshio Ozaki
发明人： Akihiro Goto , Mitsuyoshi Wada , Yoshio Ozaki
摘要： An electrical discharge machine for applying a pulsed voltage to a machining gap between an electrode and a workpiece disposed opposite thereto. An insulating dielectric fluid, comprising an oil or water with compound additive, is disposed in the gap. A positive polarity voltage and an opposite polarity voltage are applied via switches and respective impedances to the machining gap in order to generate a discharge for machining the workpiece. A high frequency alternating current voltage is applied between the electrode and the workpiece when the first polarity and second polarity voltages are not being applied.
摘要翻译： 一种放电机，用于对电极和与其相对设置的工件之间的加工间隙施加脉冲电压。 包含油或水与复合添加剂的绝缘介质流体设置在间隙中。 通过开关和相应的阻抗将正极性电压和相反极性电压施加到加工间隙，以便产生用于加工工件的放电。 当不施加第一极性和第二极性电压时，在电极和工件之间施加高频交流电压。
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公开(公告)号：US5681488A
公开(公告)日：1997-10-28
申请号：US534643
申请日：1995-09-27
申请人： Akihiro Goto , Mitsuyoshi Wada , Yoshio Ozaki
发明人： Akihiro Goto , Mitsuyoshi Wada , Yoshio Ozaki
摘要： An electrical discharge machine for applying a pulsed voltage to a machining gap between an electrode and a workpiece disposed opposite thereto. An insulating dielectric fluid, including either oil or water with a compound additive, is disposed in the gap. A first voltage is applied to the machining gap. If a predetermined period of time passes and a discharge has not occurred at the machining gap, then a second voltage, opposite in polarity to the first voltage, is applied to the machining gap.
摘要翻译： 一种放电机，用于对电极和与其相对设置的工件之间的加工间隙施加脉冲电压。 包括油或水与复合添加剂的绝缘介电流体设置在间隙中。 第一电压施加到加工间隙。 如果预定时间段过去并且在加工间隙没有发生放电，则将与第一电压极性相反的第二电压施加到加工间隙。
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公开(公告)号：US5496984A
公开(公告)日：1996-03-05
申请号：US998840
申请日：1992-12-30
申请人： Akihiro Goto , Yoshio Ozaki , Atsushi Taneda , Tatsushi Sato , Yoshihito Imai
发明人： Akihiro Goto , Yoshio Ozaki , Atsushi Taneda , Tatsushi Sato , Yoshihito Imai
摘要： A method and apparatus for detecting and controlling the operation of an electric discharge machine for machining a workpiece. The machining is conducted by generating pulse discharges at a machining gap formed by a machining electrode and the workpiece opposed to each other. The alternating-current components or high frequency components of at least one of the current, voltage and impedance of the machining gap, the rectified components thereof, or amplitude, frequency or other signal characteristics thereof are detected and processed for control of the machining. The processing may include frequency analysis, pulse counting, threshold detection and the like using analog and digital processing.
摘要翻译： 一种用于检测和控制用于加工工件的放电加工机的操作的方法和装置。 通过在由加工电极和相对的工件形成的加工间隙产生脉冲放电来进行加工。 检测并处理加工间隙的电流，电压和阻抗，其整流分量或其振幅，频率或其它信号特性中的至少一个的交流分量或高频分量，以进行加工的控制。 该处理可以包括使用模拟和数字处理的频率分析，脉冲计数，阈值检测等。
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公开(公告)号：US5416290A
公开(公告)日：1995-05-16
申请号：US985953
申请日：1992-12-04
申请人： Takuji Magara , Hisashi Yamada
发明人： Takuji Magara , Hisashi Yamada
摘要： An electrical discharge machine equipped with a machining gap voltage application circuit having switching circuits capable of switching between a first voltage application state wherein one terminal of a first direct-current power supply is connected to an electrode and the other terminal thereof is connected to a workpiece and a first voltage is applied to the gap, a second voltage application state wherein the one terminal is connected to the workpiece and the other terminal is connected to the electrode and a second voltage is applied to the gap, and a second voltage application reset state where the second voltage is not applied to the gap. The switching circuits are operative during a first period of time when the second voltage application state and a second voltage application reset state alternate with each other, and a second period of time when the first voltage application state exists, the first and second periods are repeated in a predetermined sequence.
摘要翻译： 一种配备有加工间隙电压施加电路的放电机，其具有能够在第一电压施加状态与第一直流电源的一端连接的第一电压施加状态与其另一端连接的切换电路连接到工件 并且第一电压施加到间隙，第二电压施加状态，其中一个端子连接到工件，另一个端子连接到电极，并且第二电压被施加到间隙，并且第二电压施加复位状态 其中第二电压不施加到间隙。 开关电路在第二电压施加状态和第二电压施加复位状态彼此交替的第一时间段期间操作，以及当第一电压施加状态存在时的第二时间段，第一和第二周期被重复 以预定的顺序。
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公开(公告)号：US4673791A
公开(公告)日：1987-06-16
申请号：US768436
申请日：1985-08-22
申请人： Masanori Konno , Kiyoshi Imai , Toshihiro Dobashi
发明人： Masanori Konno , Kiyoshi Imai , Toshihiro Dobashi
摘要： A process and apparatus for controlling an electric discharge machine consisting of applying a pulse voltage across a working gap when the predetermined time of interruption of the electric discharge has lapsed and when the interpolar voltage has exceeded a reference voltage, increasing the reference voltage and lengthening the time of interruption of the electric discharge when the rate of abnormal discharge occurrence becomes greater than an allowable rate and decreasing the reference voltage and reducing the time of interruption of the electric discharge when the rate of abnormal electric discharge occurrence is less than an allowable rate.
摘要翻译： 一种用于控制放电机的处理和装置，当放电中断的预定时间已经过去并且当极间电压已经超过参考电压时，在工作间隙上施加脉冲电压，增加参考电压并延长 当异常放电发生的频率大于容许率时放电中断的时间和降低基准电压，并且当异常放电发生的频率小于容许率时减少放电中断的时间。
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10.发明授权Electric discharge system including means to normalize the interpole gap to minimize abnormal discharge conditions 失效放电系统包括使极间间隙归一化以使异常放电条件最小化的装置
公开(公告)号：US4602142A
公开(公告)日：1986-07-22
申请号：US509512
申请日：1983-06-30
申请人： Tetsuroh Itoh
发明人： Tetsuroh Itoh
CPC分类号： B23H7/16
摘要： A voltage sensor senses the gap voltage between an electrode and a conductive workpiece and compares it to a reference voltage using a comparator amplifier. The output from the comparator amplifier is used by an oil hydraulic servomechanism to raise and lower the electrode. An ultrasonic sensor detects impulse waves from discharges and a current sensor detects the working current for determining the working conditions of the gap. After a predetermined number of irregular discharges occurs the gap width may be widened by the servomechanism, the flow of dielectric fluid may be increased to remove sludge and debris, or the time between machining pulses may be increased.
摘要翻译： 电压传感器感测电极和导电工件之间的间隙电压，并使用比较器放大器将其与参考电压进行比较。 比较放大器的输出由油压伺服机构用于升高和降低电极。 超声波传感器检测来自放电的脉冲波，电流传感器检测工作电流以确定间隙的工作状态。 在发生预定数量的不规则放电之后，通过伺服机构可以加宽间隙宽度，可以增加介电流体的流动以去除污泥和碎屑，或者可以增加加工脉冲之间的时间。
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