公开(公告)号：US4631382A

公开(公告)日：1986-12-23

申请号：US651568

申请日：1984-09-18

申请人： Tokio Fukunaga ,  Takuji Magara ,  Shigekazu Sakabe ,  Jun Aramaki ,  Toshiharu Karashima ,  Minoru Ushida

发明人： Tokio Fukunaga ,  Takuji Magara ,  Shigekazu Sakabe ,  Jun Aramaki ,  Toshiharu Karashima ,  Minoru Ushida

IPC分类号： B23H11/00 ,  B23Q1/01 ,  F16M5/00 ,  B23H1/00 ,  A47B7/02 ,  B23H7/32

CPC分类号： B23Q1/01 ,  B23H11/00 ,  F16M5/00

摘要： An electrical discharge machining apparatus having an improved bed which provides improved control over the gap between a machining head and a workpiece by reducing the amount of deformation produced in the bed when the table and saddle are moved. The bed is constituted by an upper plate and side plates, with saddle guide rails being disposed on the upper plate, a saddle movably mounted on the saddle guide rails, table guide rails mounted on the saddle, and a workpiece-supporting table movably mounted on the saddle guide rails. In accordance with one embodiment of the invention, the saddle guide rails are positioned at the edges of the upper plate, directly above the side plates of the bed. In another embodiment, reinforcing members are provided under the upper plate, extending parallel to and directly under respective ones of guide rails.

摘要翻译： 一种具有改进床的放电加工装置，其通过减小床和鞍座移动时在床中产生的变形量来提高对加工头和工件之间的间隙的控制。 床由上板和侧板构成，鞍形导轨设置在上板上，鞍座可移动地安装在鞍座导轨上，安装在鞍座上的工作台导轨和可移动地安装在鞍座导轨上的工件支撑台 鞍座导轨。 根据本发明的一个实施例，鞍形导轨位于上板的边缘，正好位于床的侧板上方。 在另一个实施例中，加强构件设置在上板下方，平行于和直接位于相应的导轨下方。

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。

公开(公告)号：US5756956A

公开(公告)日：1998-05-26

申请号：US531076

申请日：1995-09-20

申请人： Seiji Sato ,  Hisashi Yamada ,  Takuji Magara ,  Yoshihito Imai ,  Tatsushi Sato

发明人： Seiji Sato ,  Hisashi Yamada ,  Takuji Magara ,  Yoshihito Imai ,  Tatsushi Sato

IPC分类号： B23H1/02 ,  B23H7/02 ,  B23H7/04

CPC分类号： B23H7/04

摘要： A wire-cut electric discharge machining apparatus and a control method for the wire-cut EDM apparatus. The amount of current pulses supplied to a machining gap can be measured precisely without a detection delay to thereby detect the occurrence of faulty machining such as wire electrode breakage and centralized arcs.

摘要翻译： 一种线切割放电加工装置以及用于线切割EDM装置的控制方法。 提供给加工间隙的电流脉冲量可以精确测量而没有检测延迟，从而检测线电极断裂和集中电弧等故障加工的发生。

公开(公告)号：US5422455A

公开(公告)日：1995-06-06

申请号：US13049

申请日：1993-02-04

申请人： Seiji Sato ,  Takuji Magara ,  Hisashi Yamada

发明人： Seiji Sato ,  Takuji Magara ,  Hisashi Yamada

IPC分类号： B23H1/00 ,  B23H1/02 ,  B23H7/04

CPC分类号： B23H7/04 ,  B23H1/022

摘要： An electric discharge machining apparatus of the travelling wire or sink type includes at least one secondary electrode which is immersed in the dielectric at least during machining. A microvoltage power supply is used to create a micropotential difference between the workpiece and the secondary electrode so that the workpiece becomes a negative pole. Maintaining this arrangement both during machining and non-machining times prevents the workpiece from being subjected to positive-pole oxidation.

摘要翻译： 行走线或水槽式放电加工装置至少包括至少一个辅助电极，其至少在加工过程中浸入电介质中。 使用微电压电源来产生工件和次级电极之间的微小差异，使得工件变为负极。 在加工和非加工时间期间保持这种布置可以防止工件受到正极氧化。

公开(公告)号：US5233147A

公开(公告)日：1993-08-03

申请号：US872369

申请日：1992-04-23

申请人： Takuji Magara

发明人： Takuji Magara

IPC分类号： B23H1/02 ,  B23H7/02 ,  B23H7/04

CPC分类号： B82Y15/00 ,  B23H7/04

摘要： The wire-cut electric discharge machine controls the mean voltage or mean current detected in the detection circuit in response to the variation of the feed rate of the workpiece. The electrostatic attractive force and discharge repulsive force act to the workpiece and make a balance. As a result, the arcuate shape distortion is canceled.

公开(公告)号：US5189276A

公开(公告)日：1993-02-23

申请号：US883615

申请日：1992-03-27

申请人： Takuji Magara

发明人： Takuji Magara

IPC分类号： B23H1/10

CPC分类号： B23H1/10

摘要： An electrical discharge machining (EDM) apparatus having one or more dielectric tanks, each having one or more compartments, connected to an EDMing tank by pipes, defining input and output dielectric paths and having selectively placed therein pumps and control valves. The tanks are used for containing dielectric during roughing and finishing operations. Filters are used in the paths for removal of particles suspended in the dielectric. A filter loop with input and output paths containing a bidirectional filter can be used to filter and store finishing powders from a finishing dielectric and to regenerate the finishing dielectric by backwashing the filter with clean dielectric to replace the powder in the dielectric. Various combinations of inputs, discharge and filter paths may be used with various designs of dielectric tanks, having one or more compartments, in order to meet particular operational requirements. The operation of valves and filters in the disclosed invention can occur automatically, in response to the output from various detectors, positioned to identify respective system parameters.

摘要翻译： 一种放电加工（EDM）装置，其具有一个或多个介质罐，每个介质罐具有一个或多个隔室，通过管道连接到EDMing罐，限定了输入和输出电介质路径，并且选择性地放置在泵和控制阀中。 在粗加工和精加工操作期间，这些罐用于容纳电介质。 在用于去除悬浮在电介质中的颗粒的路径中使用过滤器。 具有包含双向滤波器的输入和输出路径的滤波器回路可以用于从整理电介质过滤和存储整理粉末，并通过用干净的电介质反冲洗过滤器来再生整理电介质，以代替电介质中的粉末。 输入，放电和滤波器路径的各种组合可以与具有一个或多个隔间的各种介质槽的设计一起使用，以满足特定的操作要求。 所公开的发明中的阀和过滤器的操作可以响应于来自各种检测器的输出自动发生，其被定位成识别相应的系统参数。

公开(公告)号：US5118915A

公开(公告)日：1992-06-02

申请号：US707552

申请日：1991-05-30

申请人： Takuji Magara

发明人： Takuji Magara

IPC分类号： B23H1/02 ,  B23H7/18

CPC分类号： B23H7/18

摘要： An electric discharge machine in which a machining gap or machining area is calculated from the rise time of a pulse voltage applied to the machining gap to stabilize and optimize the marching operation. An abnormal machining conditions such as an arc discharge can be positively detected and avoided. Further, the low surface roughness finish which is impossible to achieve in a large area machining operation can be accomplished.

摘要翻译： 一种放电加工机，其特征在于，根据施加到所述加工间隙的脉冲电压的上升时间计算加工间隙或加工面积，以稳定和优化所述行进操作。 可以肯定地检测和避免诸如电弧放电的异常加工条件。 此外，可以实现在大面积加工操作中不可能实现的低表面粗糙度。

公开(公告)号：US5021622A

公开(公告)日：1991-06-04

申请号：US224853

申请日：1988-08-17

申请人： Takuji Magara ,  Toshio Suzuki

发明人： Takuji Magara ,  Toshio Suzuki

IPC分类号： B23H7/06

CPC分类号： B23H7/065

摘要： A wire cut electrical discharge machine includes a control device which corrects a change in the electrode side gap due to a change in the amount of removal in accordance with information relating to the machining operation provided beforehand and information indicating a current machining position and a current machining condition, thereby to improve the machining accuracy at the corner portion of the workpiece.

摘要翻译： PCT No.PCT / JP87 / 00814 Sec。 371日期1988年8月17日 102（e）日期1988年8月17日PCT提交1987年10月23日PCT公布。 公开号WO88 / 03071 日期：1988年5月5日。线切割放电机包括：控制装置，其根据与事先提供的加工操作有关的信息，校正由于去除量的变化引起的电极侧间隙的变化，以及指示电流 加工位置和当前加工条件，从而提高在工件的拐角处的加工精度。

公开(公告)号：US5001321A

公开(公告)日：1991-03-19

申请号：US390846

申请日：1989-08-08

申请人： Takeshi Iwasaki ,  Takuji Magara ,  Toshio Suzuki ,  Masahiro Yamamoto

发明人： Takeshi Iwasaki ,  Takuji Magara ,  Toshio Suzuki ,  Masahiro Yamamoto

IPC分类号： B23H7/02 ,  B23H7/10

CPC分类号： B23H7/102

摘要： A detecting unit for detecting when the wire electrode is released from a jet stream of a machining solution during the feeding of the wire electrode. Upon detection of the release of the wire electrode, the feeding of the wire electrode is suspended automatically to remove the deformed wire electrode.

摘要翻译： 一种检测单元，用于检测在线电极馈送期间线电极何时从加工溶液的喷射流中释放。 当检测到线电极的释放时，线电极的馈送被自动悬挂以去除变形的线电极。

公开(公告)号：US20050127041A1

公开(公告)日：2005-06-16

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： B23H1/02 ,  B23H7/04

CPC分类号： B23H1/022 ,  B23H7/04

摘要： An electric power unit for machining of a wire electric discharge machine for machining a workpiece (W) in which an electric discharge inductive pulse voltage is impressed upon between electrodes of a wire electrode (E) and workpiece (W), after insulation between the electrodes has been broken by the pulse voltage and electric discharge has been induced, a pulse voltage for machining is impressed upon between the electrodes so as to conduct machining on the workpiece (W). The electric power unit for machining of a wire electric discharge machine includes an electric discharge state discriminating means (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) by the electric discharge state discriminating means (1a) 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) by the electric discharge state discriminating means. Thus the machining efficiency is improved.

摘要翻译： 一种用于加工电线放电机的电力单元，用于加工在电极（E）和工件（W）的电极之间施加放电感应脉冲电压的工件（W），在电极 已经被脉冲电压破坏，并且已经感应出放电，用于加工的脉冲电压施加在电极之间，以便对工件（W）进行加工。 用于加工电火花线切割机的电力单元包括用于鉴别电极之间产生的放电状态的放电状态判别装置（1a）和用于使电极的极性反转的压电电压选择装置（1b） 当电极之间的放电状态被放电状态判别装置（1a）识别为异常（Y 1）或断开（Y 3）时，来自先前放电感应脉冲电压的放电感应脉冲电压， 当通过放电状态判别装置将电极之间的放电状态判断为正常（Y 2）时，放电感应脉冲电压的极性与先前放电感应脉冲电压的极性相同。 因此提高了加工效率。