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31. 发明授权

US5847352A Method and apparatus for electrical discharge machining 失效
标题翻译：放电加工方法和装置
公开(公告)号：US5847352A
公开(公告)日：1998-12-08
申请号：US853483
申请日：1997-05-09
申请人： Takashi Yuzawa , Takuji Magara
发明人： Takashi Yuzawa , Takuji Magara
IPC分类号： B23H7/20 , B23H7/26 , B23H7/30 , B23H1/00 , B23H7/18
CPC分类号： B23H7/30
摘要： An electric discharge machining apparatus and method are provided first having a data storage for storing initial machining conditions such as a two-dimensional outline path for a machined form, dimensions of the machined form, a feed rate in the axial direction of an electrode for a given movement of the tool electrode in the horizontal direction, and an interval period of inline measurement. In addition, the apparatus measures a machining depth at each interval period of inline measurement. The apparatus also computes machining parameters such as a machining depth for each machining pass, a number of remaining passes of machining which are to be executed, and also increments an outline offset according to the measured machining depth. An electrode position control then provides positional control of a tool electrode according to the computed machining parameters.
摘要翻译：首先提供一种放电加工装置和方法，其具有用于存储初始加工条件的数据存储装置，例如用于机加工形状的二维轮廓路径，加工形状的尺寸，用于给定工具电极在水平方向的移动，以及间隔期的在线测量。此外，该装置测量在线测量的每个间隔周期的加工深度。该装置还计算加工参数，例如每个加工道次的加工深度，要执行的剩余加工数，并根据测量的加工深度增加轮廓偏移。然后，电极位置控制根据所计算的加工参数提供工具电极的位置控制。

32. 发明授权

US08309876B2 Electric discharge machining apparatus and electric discarge machining method 有权
标题翻译：放电加工装置和电动放大加工方法
公开(公告)号：US08309876B2
公开(公告)日：2012-11-13
申请号：US12865655
申请日：2008-01-31
申请人： Takashi Hashimoto , Takashi Yuzawa , Koichiro Hattori , Yoshikazu Ukai
发明人： Takashi Hashimoto , Takashi Yuzawa , Koichiro Hattori , Yoshikazu Ukai
IPC分类号： B23H1/00
CPC分类号： B23H1/022
摘要： In a waveform of switching signals, which is output from a full-bridge circuit formed of four switching elements, includes a normal polarity pulse group and a reversed polarity pulse group for controlling an output timing of voltage pulses. A duty cycle of the normal polarity pulse group containing a plurality of normal polarity pulses, which apply a positive power-supply polarity to a workpiece and apply a negative power-supply polarity to a machining-purpose electrode, is configured so as to be different from a duty cycle of the reversed polarity pulse group containing a plurality of reversed polarity pulses, which apply a negative power-supply polarity to the workpiece and apply a positive power-supply polarity to the machining-purpose electrode.
摘要翻译：在从由四个开关元件构成的全桥电路输出的开关信号的波形中，包括用于控制电压脉冲的输出定时的正极性脉冲组和反极性脉冲组。将包含对工件施加正电源极性并向加工用电极施加负电源极性的多个正常极性脉冲的正常极性脉冲群的占空比构成为不同从包含多个反极性脉冲的反极性脉冲组的占空比，向工件施加负电源极性，并向加工用电极施加正电源极性。

33. 发明授权

US06821579B2 Surface treatment method using electric discharge, and an electrode for the surface treatment method 有权
标题翻译：使用放电的表面处理方法和表面处理方法用电极
公开(公告)号：US06821579B2
公开(公告)日：2004-11-23
申请号：US09822025
申请日：2001-03-30
申请人： Takashi Yuzawa , Akihiro Goto , Toshio Moro
发明人： Takashi Yuzawa , Akihiro Goto , Toshio Moro
IPC分类号： H05H148
CPC分类号： C23C26/00 , B23H9/00 , B23H9/008 , F16C29/005 , F16C33/64 , Y10T428/12167 , Y10T428/12174
摘要： A discharge electrode comprising a material having solid lubricant effect, such as molybdenum, is used to generate discharge in a pulse form between the discharge electrode and a workpiece, the surface of which is to be treated, in working liquid containing carbon components, such as water. Material consumed or melted from the discharge electrode, generated because of the electric discharge energy based on the pulse form discharge, gets adhered to and deposited onto a surface of the workpiece thereby forming a coat having lubricant effect on the surface of the workpiece.
摘要翻译：包括具有固体润滑效果的材料如钼的放电电极用于在放电电极和待处理表面的工件之间以脉冲形式在包含碳成分的工作液体中产生放电，例如水。由于基于脉冲形式放电的放电能量而产生的从放电电极消耗或熔化的材料粘附并沉积到工件的表面上，从而在工件的表面上形成具有润滑效果的涂层。

34. 发明授权

US06713706B2 Jump control apparatus for electric discharge shaping/profiling machine 有权
标题翻译：放电成型/成型机跳转控制装置
公开(公告)号：US06713706B2
公开(公告)日：2004-03-30
申请号：US10138294
申请日：2002-05-06
申请人： Masao Akiyoshi , Takashi Yuzawa
发明人： Masao Akiyoshi , Takashi Yuzawa
IPC分类号： B23H732
CPC分类号： B23H7/16 , B23H7/18
摘要： A jump control apparatus for an electric discharge machine ensuring high machining precision while reducing machining time by removing sludge speedily, regardless of differences in shape among workpieces, includes a feed control unit for controlling a vertical position of an electrode relative to a workpiece, a jump condition estimating unit for estimating jump conditions for the electrode for removing the sludge between the electrode and the workpiece during machining. The jump conditions generated are input to the feed control unit. The apparatus includes an input unit for inputting machining conditions relating to the jump conditions in precedence to machining, and a numerical control unit for determining various parameters in dependence on the machining conditions. The parameters are input to the jump condition estimating unit for estimating the jump conditions through feed-forward control using the parameters.
摘要翻译：一种放电机的跳跃控制装置，其特征在于，不管工件之间的形状如何，通过快速去除污泥来减少加工时间，确保高的加工精度，同时具有用于控制电极相对于工件的垂直位置的进给控制部，条件估计单元，用于估计用于在加工期间去除电极和工件之间的污泥的电极的跳跃条件。生成的跳跃条件被输入到进给控制单元。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，以及用于根据加工条件确定各种参数的数值控制单元。这些参数被输入到跳跃条件估计单元，用于通过使用参数的前馈控制来估计跳跃条件。

35. 发明授权

US06505091B1 Method and apparatus for electrodischarge machining 有权
标题翻译：放电加工方法和装置
公开(公告)号：US06505091B1
公开(公告)日：2003-01-07
申请号：US09462687
申请日：2000-03-21
申请人： Yoshihito Imai , Takayuki Nakagawa , Takashi Yuzawa
发明人： Yoshihito Imai , Takayuki Nakagawa , Takashi Yuzawa
IPC分类号： G06F1900
CPC分类号： B23H7/18 , B23H7/16 , B23H7/20 , B23H2400/10
摘要： A detected value indicating a machining state is filtered and a machining gap between an electrode and a workpiece is adjusted by using a control variable obtained through the filtering. Therefore, machining speed can be improved by maintaining a stable machining state through suppression of a disturbance in a gap distance control system due to eccentricity of an electrode, due to fluctuations in electric characteristics at feeding brush sections, and due to mechanical resonance of the electrode driving system.
摘要翻译：通过使用通过滤波获得的控制变量来过滤表示加工状态的检测值，并且调整电极和工件之间的加工间隙。因此，通过由于电极的偏心引起的间隙距离控制系统的干扰，由于馈电刷部分的电特性的波动以及由于电极的机械共振而保持了稳定的加工状态，因此可以提高加工速度驾驶系统

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